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	Comments on: The periodic table	</title>
	<atom:link href="https://thenewneo.com/2012/08/18/the-periodic-table/feed/" rel="self" type="application/rss+xml" />
	<link>https://thenewneo.com/2012/08/18/the-periodic-table/</link>
	<description>A blog about political change, among other things</description>
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		<title>
		By: Judy C. Giddens		</title>
		<link>https://thenewneo.com/2012/08/18/the-periodic-table/#comment-779927</link>

		<dc:creator><![CDATA[Judy C. Giddens]]></dc:creator>
		<pubDate>Thu, 22 May 2014 11:14:24 +0000</pubDate>
		<guid isPermaLink="false">http://neoneocon.com/?p=15862#comment-779927</guid>

					<description><![CDATA[Very nice! it makes me proud to be a student of chemistry. Universe has systematize  everything very clearly. When i think about my past, Oh really it brings a slight smile on my face.]]></description>
			<content:encoded><![CDATA[<p>Very nice! it makes me proud to be a student of chemistry. Universe has systematize  everything very clearly. When i think about my past, Oh really it brings a slight smile on my face.</p>
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		<title>
		By: Occam's Beard		</title>
		<link>https://thenewneo.com/2012/08/18/the-periodic-table/#comment-402497</link>

		<dc:creator><![CDATA[Occam's Beard]]></dc:creator>
		<pubDate>Tue, 21 Aug 2012 05:21:56 +0000</pubDate>
		<guid isPermaLink="false">http://neoneocon.com/?p=15862#comment-402497</guid>

					<description><![CDATA[&lt;i&gt;I may be showing my age, but I still remember when the periodic table stopped at Lw (Lawrencium, element 103).&lt;/i&gt;

FWIW, I don&#039;t bother keeping up with any of the transuranium elements, and I&#039;m a chemist. If you can&#039;t produce more than a couple of dozen atoms of an element, I say the hell with it.]]></description>
			<content:encoded><![CDATA[<p><i>I may be showing my age, but I still remember when the periodic table stopped at Lw (Lawrencium, element 103).</i></p>
<p>FWIW, I don&#8217;t bother keeping up with any of the transuranium elements, and I&#8217;m a chemist. If you can&#8217;t produce more than a couple of dozen atoms of an element, I say the hell with it.</p>
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		<title>
		By: sheldan		</title>
		<link>https://thenewneo.com/2012/08/18/the-periodic-table/#comment-402154</link>

		<dc:creator><![CDATA[sheldan]]></dc:creator>
		<pubDate>Mon, 20 Aug 2012 15:33:09 +0000</pubDate>
		<guid isPermaLink="false">http://neoneocon.com/?p=15862#comment-402154</guid>

					<description><![CDATA[I may be showing my age, but I still remember when the periodic table stopped at Lw (Lawrencium, element 103).  Element 104 had just been discovered, allegedly by Russians who gave it a Russian name.  I think element 104 also has an American name, which shows that the Cold War was going strong at the time.

Interesting that they decided on the new system of naming future elements with three letters, after the number (effectively, element 108 is literally &quot;108-ium&quot;!).

Thanks for a trip down memory lane.]]></description>
			<content:encoded><![CDATA[<p>I may be showing my age, but I still remember when the periodic table stopped at Lw (Lawrencium, element 103).  Element 104 had just been discovered, allegedly by Russians who gave it a Russian name.  I think element 104 also has an American name, which shows that the Cold War was going strong at the time.</p>
<p>Interesting that they decided on the new system of naming future elements with three letters, after the number (effectively, element 108 is literally &#8220;108-ium&#8221;!).</p>
<p>Thanks for a trip down memory lane.</p>
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		<title>
		By: Occam's Beard		</title>
		<link>https://thenewneo.com/2012/08/18/the-periodic-table/#comment-401925</link>

		<dc:creator><![CDATA[Occam's Beard]]></dc:creator>
		<pubDate>Mon, 20 Aug 2012 01:46:30 +0000</pubDate>
		<guid isPermaLink="false">http://neoneocon.com/?p=15862#comment-401925</guid>

					<description><![CDATA[Charlie, sure, I meant what motivated Mulliken to develop the LCAO-MO method. LCAO-MO is usually taught as a &lt;i&gt;deus ex machina&lt;/i&gt; approach to bonding, as though Mulliken one day, for no apparent reason, jumped up, yelled &quot;Eureka!&quot; and start making linear combinations of atomic orbitals. Backing out the historical context of why he and others were working on this makes a lot more sense to beginning students.

In an abstract way, a similar problem arises in some historical accounts of WWII in the Pacific. Why did we invade Guadalcanal, of all the God forsaken places on earth? At first glance, it looks like a peculiar choice, if one doesn&#039;t know the threat the Japanese advance posed to the supply lines to Australia. THEN it makes perfect sense.]]></description>
			<content:encoded><![CDATA[<p>Charlie, sure, I meant what motivated Mulliken to develop the LCAO-MO method. LCAO-MO is usually taught as a <i>deus ex machina</i> approach to bonding, as though Mulliken one day, for no apparent reason, jumped up, yelled &#8220;Eureka!&#8221; and start making linear combinations of atomic orbitals. Backing out the historical context of why he and others were working on this makes a lot more sense to beginning students.</p>
<p>In an abstract way, a similar problem arises in some historical accounts of WWII in the Pacific. Why did we invade Guadalcanal, of all the God forsaken places on earth? At first glance, it looks like a peculiar choice, if one doesn&#8217;t know the threat the Japanese advance posed to the supply lines to Australia. THEN it makes perfect sense.</p>
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		<title>
		By: Good Ole Charlie		</title>
		<link>https://thenewneo.com/2012/08/18/the-periodic-table/#comment-401896</link>

		<dc:creator><![CDATA[Good Ole Charlie]]></dc:creator>
		<pubDate>Sun, 19 Aug 2012 23:55:52 +0000</pubDate>
		<guid isPermaLink="false">http://neoneocon.com/?p=15862#comment-401896</guid>

					<description><![CDATA[OB:

You asked: &quot;...molecular orbital theory (where’s Charlie, anyway?). &quot;

Answer:  earlier this evening have just come back for three weeks in Cundys Harbor, Maine.  Ten feet from the tidal Atlantic Ocean enjoying two pound fresh-from-the-trap &quot;Lobstah&quot; at $3.75 per pound, two pound minimums. 

The above paragraph puts the world in perspective.

The Variation Principle and linear properties of The Wave Function are what you are groping for.  Remember LCAO is Linear Combination of Atomic Orbitals...plus some neat calculus to ensure you have a energy minimum/maximum on your hands.

Pass the Butter, Beer, and Beast, Grand-daughter.]]></description>
			<content:encoded><![CDATA[<p>OB:</p>
<p>You asked: &#8220;&#8230;molecular orbital theory (where’s Charlie, anyway?). &#8221;</p>
<p>Answer:  earlier this evening have just come back for three weeks in Cundys Harbor, Maine.  Ten feet from the tidal Atlantic Ocean enjoying two pound fresh-from-the-trap &#8220;Lobstah&#8221; at $3.75 per pound, two pound minimums. </p>
<p>The above paragraph puts the world in perspective.</p>
<p>The Variation Principle and linear properties of The Wave Function are what you are groping for.  Remember LCAO is Linear Combination of Atomic Orbitals&#8230;plus some neat calculus to ensure you have a energy minimum/maximum on your hands.</p>
<p>Pass the Butter, Beer, and Beast, Grand-daughter.</p>
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		<title>
		By: Occam's Beard		</title>
		<link>https://thenewneo.com/2012/08/18/the-periodic-table/#comment-401810</link>

		<dc:creator><![CDATA[Occam's Beard]]></dc:creator>
		<pubDate>Sun, 19 Aug 2012 18:24:42 +0000</pubDate>
		<guid isPermaLink="false">http://neoneocon.com/?p=15862#comment-401810</guid>

					<description><![CDATA[I think pervasive problem with university-level instruction is that faculty think they should lecture on something of interest &lt;i&gt;to them&lt;/i&gt;, and consequently pitch lectures way too high. 

I practiced my first lecture in freshman chem (before my pedagogical epiphany described above) before a colleague, and covered periodicity, exclusion principle, Aufbau principle, and shielding. What did he think?, I asked. He said it was great, but you just covered the first semester&#039;s work in one hour.

Even in graduate level courses, it&#039;s easy to blow people away inadvertently. Bottom line: if you&#039;re bored by the subject material, you&#039;re aiming too high. The trick is not to let your boredom show, but to feign the excitement you felt when you first grasped the topic.]]></description>
			<content:encoded><![CDATA[<p>I think pervasive problem with university-level instruction is that faculty think they should lecture on something of interest <i>to them</i>, and consequently pitch lectures way too high. </p>
<p>I practiced my first lecture in freshman chem (before my pedagogical epiphany described above) before a colleague, and covered periodicity, exclusion principle, Aufbau principle, and shielding. What did he think?, I asked. He said it was great, but you just covered the first semester&#8217;s work in one hour.</p>
<p>Even in graduate level courses, it&#8217;s easy to blow people away inadvertently. Bottom line: if you&#8217;re bored by the subject material, you&#8217;re aiming too high. The trick is not to let your boredom show, but to feign the excitement you felt when you first grasped the topic.</p>
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		<title>
		By: Occam's Beard		</title>
		<link>https://thenewneo.com/2012/08/18/the-periodic-table/#comment-401808</link>

		<dc:creator><![CDATA[Occam's Beard]]></dc:creator>
		<pubDate>Sun, 19 Aug 2012 18:18:28 +0000</pubDate>
		<guid isPermaLink="false">http://neoneocon.com/?p=15862#comment-401808</guid>

					<description><![CDATA[Waltj, I was lousy at math (as physical scientists go), largely because of a lack of talent plus some poor teachers. One math prof, from whom I took Diff Eq., was right off the boat from China. He used to say, &quot;Sorve dis equation for all possible sorutions,&quot; and then turn and mutter into the blackboard in Chinglish for the rest of the lecture. &quot;All possible sorutions&quot; was generally the last thing he said that I understood.

Curiously, I quite like math now, but have lost interest in chemistry.]]></description>
			<content:encoded><![CDATA[<p>Waltj, I was lousy at math (as physical scientists go), largely because of a lack of talent plus some poor teachers. One math prof, from whom I took Diff Eq., was right off the boat from China. He used to say, &#8220;Sorve dis equation for all possible sorutions,&#8221; and then turn and mutter into the blackboard in Chinglish for the rest of the lecture. &#8220;All possible sorutions&#8221; was generally the last thing he said that I understood.</p>
<p>Curiously, I quite like math now, but have lost interest in chemistry.</p>
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		<title>
		By: waltj		</title>
		<link>https://thenewneo.com/2012/08/18/the-periodic-table/#comment-401803</link>

		<dc:creator><![CDATA[waltj]]></dc:creator>
		<pubDate>Sun, 19 Aug 2012 17:55:46 +0000</pubDate>
		<guid isPermaLink="false">http://neoneocon.com/?p=15862#comment-401803</guid>

					<description><![CDATA[Occam, it would have been nice to have had you or someone like you as a science teacher when I was young.  I love science in general, but I always had a hard time with science and higher math in school.  Some of it was my fault because of my at times indifferent study habits back in the day, but I also had some awful teachers.  I&#039;ve had all types of bad:  ignorant of the subject, lousy at presentation, incomprehensible foreign accent, illegible writing on the board, droning monotone, you name it.]]></description>
			<content:encoded><![CDATA[<p>Occam, it would have been nice to have had you or someone like you as a science teacher when I was young.  I love science in general, but I always had a hard time with science and higher math in school.  Some of it was my fault because of my at times indifferent study habits back in the day, but I also had some awful teachers.  I&#8217;ve had all types of bad:  ignorant of the subject, lousy at presentation, incomprehensible foreign accent, illegible writing on the board, droning monotone, you name it.</p>
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		<title>
		By: Don Carlos		</title>
		<link>https://thenewneo.com/2012/08/18/the-periodic-table/#comment-401797</link>

		<dc:creator><![CDATA[Don Carlos]]></dc:creator>
		<pubDate>Sun, 19 Aug 2012 17:38:51 +0000</pubDate>
		<guid isPermaLink="false">http://neoneocon.com/?p=15862#comment-401797</guid>

					<description><![CDATA[The order of the Universe, which man has diligently and incrementally discovered, is proof that God the Creator exists.]]></description>
			<content:encoded><![CDATA[<p>The order of the Universe, which man has diligently and incrementally discovered, is proof that God the Creator exists.</p>
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		<title>
		By: Occam's Beard		</title>
		<link>https://thenewneo.com/2012/08/18/the-periodic-table/#comment-401762</link>

		<dc:creator><![CDATA[Occam's Beard]]></dc:creator>
		<pubDate>Sun, 19 Aug 2012 15:29:38 +0000</pubDate>
		<guid isPermaLink="false">http://neoneocon.com/?p=15862#comment-401762</guid>

					<description><![CDATA[&lt;i&gt;Instead, I got explanations that might have made sense to someone who already had a solid foundation in the subject.&lt;/i&gt;

This is a pet peeve of mine in chemistry (and especially) math education. Chemistry classes invariably start with the Schroedinger equation, which is not chemistry and was only devised long after lot of chemistry was already known. It is, in a sense, an after the fact rationalization of centuries of observations. It&#039;s elegant, but teaching it first does not reflect the historical intellectual development of the subject. My question at the time was what in God&#039;s green earth motivated Schroedinger to write the damned equation in the first place?

Similar considerations obtain for molecular orbital theory (where&#039;s Charlie, anyway?). One day Mulliken just decided to make linear combinations of atomic orbitals? Why? Had he eaten a bad burrito and had visions or something?

I prefer a more phenomenological introduction to chemistry. Here are the observations, how can we understand them, and predict future ones? MO theory came from the observation that the number of conjugated double bonds in dyes correlated with their color. The dye industry wanted to know why, and how to use that information. 

Some transition metal complexes are colored, some colorless, some are pulled into magnetic fields, some are pushed out, some exchange ligands quickly, others slowly. Why? Bethe&#039;s crystal field theory neatly explained all of those observations, converting a patchwork of bewildering data into a coherent whole.

Students find that approach much more interesting because it gets into real chemistry - which is interesting to everyone, as evidenced by any bangs and booms lecture - first, and hooking them on the subject, seques into the theory that explains what they&#039;ve just seen.]]></description>
			<content:encoded><![CDATA[<p><i>Instead, I got explanations that might have made sense to someone who already had a solid foundation in the subject.</i></p>
<p>This is a pet peeve of mine in chemistry (and especially) math education. Chemistry classes invariably start with the Schroedinger equation, which is not chemistry and was only devised long after lot of chemistry was already known. It is, in a sense, an after the fact rationalization of centuries of observations. It&#8217;s elegant, but teaching it first does not reflect the historical intellectual development of the subject. My question at the time was what in God&#8217;s green earth motivated Schroedinger to write the damned equation in the first place?</p>
<p>Similar considerations obtain for molecular orbital theory (where&#8217;s Charlie, anyway?). One day Mulliken just decided to make linear combinations of atomic orbitals? Why? Had he eaten a bad burrito and had visions or something?</p>
<p>I prefer a more phenomenological introduction to chemistry. Here are the observations, how can we understand them, and predict future ones? MO theory came from the observation that the number of conjugated double bonds in dyes correlated with their color. The dye industry wanted to know why, and how to use that information. </p>
<p>Some transition metal complexes are colored, some colorless, some are pulled into magnetic fields, some are pushed out, some exchange ligands quickly, others slowly. Why? Bethe&#8217;s crystal field theory neatly explained all of those observations, converting a patchwork of bewildering data into a coherent whole.</p>
<p>Students find that approach much more interesting because it gets into real chemistry &#8211; which is interesting to everyone, as evidenced by any bangs and booms lecture &#8211; first, and hooking them on the subject, seques into the theory that explains what they&#8217;ve just seen.</p>
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