Molecular Structure Worksheet - South Pasadena Page 4

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9  Molecular Structure
7 – MULTIPLE BONDS / SIGMA & PI BONDS
Consider the gas, hydrogen cyanide, HCN:
This molecule contains ___ sigma bonds and ___ pi bonds.
The steric number for H = ___ C = ___ N = ___.
The hybridization for H = ____ C = ____ N = ____.
Draw the “balloon diagram” for HCN.
9  Molecular Structure
8 – RESONANCE & BOND ORDER
2
Draw the Lewis Structures for CO
and NO
:
3
2
2
NO
CO
2
3
What is the bond order of the bonds in each case?

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