What is the shape of a molecule? - George Zaidan and Charles Morton
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Date: 2020-08-22
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Comments and reviews: 10
Anthony
In H2O, in addition to the two H's that the O is bonded to, the O also has two lone pairs of non-bonding electrons. Those two pairs will repel the O-H bonds. The lone pairs aren't shown in molecule drawings, so it gives H2O its bent shape. If you drew all the orbitals, it would be like CH4 with a tetrahedral shape.
In CO2, there are two double bonds between the C and each O. Double bonds are significantly more rigid than single bonds and are shown as straight lines. Also, C has no lone pairs.
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In H2O, in addition to the two H's that the O is bonded to, the O also has two lone pairs of non-bonding electrons. Those two pairs will repel the O-H bonds. The lone pairs aren't shown in molecule drawings, so it gives H2O its bent shape. If you drew all the orbitals, it would be like CH4 with a tetrahedral shape.
In CO2, there are two double bonds between the C and each O. Double bonds are significantly more rigid than single bonds and are shown as straight lines. Also, C has no lone pairs.
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Brent
The shape of the molecule is also effected by electron pairs. Take ammonia: NH3 for example. Now you notice I included the electron pair from nitrogen which has 5 electrons in its outer shell. Each Hydrogen has 1 electron giving a total of 8 electrons completing the outer shell for both N and H. There is a repulsion effect of the electron pair and the hydrogen atoms making it look like a pyramid. On H2O, the O has 6 electrons + 2H leaving two electron pairs on the O which forces a bend.
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The shape of the molecule is also effected by electron pairs. Take ammonia: NH3 for example. Now you notice I included the electron pair from nitrogen which has 5 electrons in its outer shell. Each Hydrogen has 1 electron giving a total of 8 electrons completing the outer shell for both N and H. There is a repulsion effect of the electron pair and the hydrogen atoms making it look like a pyramid. On H2O, the O has 6 electrons + 2H leaving two electron pairs on the O which forces a bend.
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Diente
I really wish I had a science education based on this kind of information instead of boring, plain data sheets to memorize. All those lessons made me hate most of science, but 15 years later I've learned to love it more than ever thanks to Internet and my curiosity. World needs a change in the way students are taught.
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I really wish I had a science education based on this kind of information instead of boring, plain data sheets to memorize. All those lessons made me hate most of science, but 15 years later I've learned to love it more than ever thanks to Internet and my curiosity. World needs a change in the way students are taught.
reply
Joel
I feel like education in schools these days just focus so much on getting good test scores that we only focus on HOW things happen rather than WHY they happen, giving us the illusion that we are learning when in fact we only have a very shallow understanding. Thank you for these videos.
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I feel like education in schools these days just focus so much on getting good test scores that we only focus on HOW things happen rather than WHY they happen, giving us the illusion that we are learning when in fact we only have a very shallow understanding. Thank you for these videos.
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Benjamin
As a teacher's aid, this video is amazing for introducing chemistry students to chemical bonding and molecular shapes, especially since it doesn't delve into hybrid orbitals.
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As a teacher's aid, this video is amazing for introducing chemistry students to chemical bonding and molecular shapes, especially since it doesn't delve into hybrid orbitals.
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venkatesh
You said that DNA is a molecule but what atoms make up them, how do they bond together with other Deoxy-ribo Nucleic Acid 's, and where would the sausages (bonds) be?
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You said that DNA is a molecule but what atoms make up them, how do they bond together with other Deoxy-ribo Nucleic Acid 's, and where would the sausages (bonds) be?
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Yovav
Changing those atoms that build our will, will be the last paradigm, the last clarification that will open to humanity A skylight to a higher world.
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Changing those atoms that build our will, will be the last paradigm, the last clarification that will open to humanity A skylight to a higher world.
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Bipul
If you have been trying to build muscle, you should search google for Max Muscle Method. They will help you get the body you deserve.
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If you have been trying to build muscle, you should search google for Max Muscle Method. They will help you get the body you deserve.
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Bipul
If you have been trying to build muscle, you should search google for Max Muscle Method. They will help you get the body you deserve.
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If you have been trying to build muscle, you should search google for Max Muscle Method. They will help you get the body you deserve.
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Bert
Hmm. I thought he would talk about the balls and teardrops shapes as predicted by quantum mechanics. There are no sticks.
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Hmm. I thought he would talk about the balls and teardrops shapes as predicted by quantum mechanics. There are no sticks.
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