10/30 lecture

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marlene 1K
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10/30 lecture

Postby marlene 1K » Fri Oct 30, 2020 12:48 pm

Why did Dr.Lavelle multiply the Sulfur electrons by 4 to get the total of 32 electrons in the sulfate, but when we did the ammonium he only multiplied Hydrogen by 4 and not Nitrogen as well??

Chem_Mod
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Re: 10/30 lecture

Postby Chem_Mod » Fri Oct 30, 2020 12:56 pm

When calculating the total number of valence electrons of a molecule, you must add up the number of valence electrons of each atom. In sulfate, he multiplied the number of valence electrons of oxygen by 4 because there are four oxygens. In ammonium, he multiplied the number of valence electrons by 4 because there are four hydrogens.

Sarah_Hoffman_2H
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Re: 10/30 lecture

Postby Sarah_Hoffman_2H » Fri Oct 30, 2020 1:00 pm

To reiterate, in the ammonium molecule, there is only one Nitrogen atom, whereas there are four Hydrogen atoms. This means there are electrons being used from 4 different hydrogen atoms, so four times the number of electrons in one Hydrogen atom.

Nadya Higgins 3F
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Re: 10/30 lecture

Postby Nadya Higgins 3F » Fri Oct 30, 2020 1:09 pm

In sulfate, there are four oxygens, and oxygen has 6 valence electrons. For this reason, Prof. Lavelle multiplied 6 by 4 for oxygen. In ammonium, there are 4 hydrogens and so its one valence electron was multiplied by 4.

Crystal Pan 2G
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Re: 10/30 lecture

Postby Crystal Pan 2G » Fri Oct 30, 2020 1:15 pm

Dr. Lavelle multiplied the number of oxygen valence electrons by 4 because there are 4 oxygen atoms in sulfate. In ammonium, there are 4 hydrogen atoms bonded to a nitrogen atom, therefore Dr. Lavelle multiplied the hydrogen valence electrons by 4.

Haochen He 3L
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Re: 10/30 lecture

Postby Haochen He 3L » Sat Oct 31, 2020 5:59 am

The sulfate has four O atoms (6*4 electrons) so prof multiplied 4. In ammonium there are 4 H atoms, therefore he multiplied the number of electrons by 4

Chudi Onyedika 3A
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Re: 10/30 lecture

Postby Chudi Onyedika 3A » Sat Oct 31, 2020 12:44 pm

Dr. Lavelle multiplied the number of oxygen atoms by 4 because there are 4 oxygen atoms in sulfate. In ammonium, there are 4 hydrogen atoms and only one nitrogen atom, which is why he multiplied the number of atoms in hydrogen by 4.


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