What are the Lewis structures for hydrogen cyanide and cyanogen??
I think it's
H:C:::N
:N:::C:C:::N:
with the inner upper electrons being shared.
For the elements in these compounds, which is the noble gas whose electron configuration is attained in the Lewis structures?
(CN)2 is ok.
You have omitted two electrons on HCN.
Count it this way.
H has 1 electron in its outer shell.
C has 4 electrons in its outer shell.
N has 5 electrons in its outer shell.
Total 1 + 4 + 5 = 10 electrons.
You have accounted only for 8.
H:C:::N:
Now look at the periodic table and identify the NEXT higher noble gas for H, C and N.
Is it Ne, Neon?
It is for C and N. Not for H.
For H, will it be He?
yes.
Thank you
You're welcome! Just to clarify, the Lewis structure for hydrogen cyanide (HCN) would be H:C:::N, with two dots between each atom representing a bond.
For the noble gas whose electron configuration is attained in the Lewis structures of these compounds, we look at the elements involved. Neon (Ne) is the noble gas that represents the electron configuration in the Lewis structures of carbon (C) and nitrogen (N) in both hydrogen cyanide and cyanogen (CN)2. However, for hydrogen (H), the closest noble gas is helium (He). This means that carbon and nitrogen achieve a stable electron configuration similar to Ne, while hydrogen achieves a stable electron configuration similar to He.