Question

Part A

Make a sketch of the following molecule: N2.

Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all hydrogen atoms and nonbonding electrons.

Part B

Make a sketch of the following molecule: N2H2 (skeletal structure HNNH).

Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all hydrogen atoms and nonbonding electrons.

Part C

Determine the molecular geometry about each interior nitrogen atom of this molecule.

Part D

Make a sketch of the following molecule: N2H4 (skeletal structure H2NNH2).

Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all hydrogen atoms and nonbonding electrons.

Part E

Determine the molecular geometry about each interior nitrogen atom of this molecule.

Answer 1

First count the total number of valence electrons in N, as follows: valence electrons in N,- 2x(5) 10 Next draw the skeletal structure of N2 shown as follows: N-N There are 2 valence electrons in the above structure, so the remaining valence electrons are 8. So, complete octet for nitrogen atoms by placing 4 valence electrons as lone pairs on each nitrogen. Therefore, the final Lewis structure of N2 is as follows:

valence electrons in N,H.- 2x(5+2x(1) 12 Next draw the skeletal structure of N,H, shown as follows: There are 6 valence electrons in the above structure, so the remaining valence electrons are 6. So, complete octet for nitrogen atom by placing 4 valence electrons as lone pairs on each nitrogen atoms. Therefore, the final Lewis structure of N,H is as follows: For making nitrogen atom as octet, shift two electrons from nitrogen to nitrogen as a double bond. Therefore, the Lewis structure of N,H, is as follows:

valence electrons in N,H,- 2x(5+4x(1) Next draw the skeletal structure of N,H, shown as follows: There are 10 valence electrons in the above structure, so the remaining valence electrons are 4. So, complete octet for nitrogen atom by placing 2 valence electrons as lone pairs on each nitrogen atoms. Therefore, the final Lewis structure of N,H is as follows: Geometryof N,isLinear. Geometry of N.H.isa open book shape Geometry of N.H, isbent trigonal pyramidal geometry