Question $1$

$\frac{0}{1}$ point

This molecule has $0_{?}$ lone pairs.

Question $3$

$\frac{0}{1}$ point

Consider a molecule of $N{H}_4.$ The formal charge on the nitrogen is

Question $5$

$\frac{0}{1}$ point

In the following scheme what does the red arrows indicate?

The movement of $2$ pii electrons and $2$ sigma electrons

the movement of pii electrons $(2$ electrons per arrow$)$

the movement of sigma electrons $(2$ electrons per arrow$)$

that the two structures are resonance forms