Answer:
E.
Explanation:
E - The lone pair in the nitrogen atom squeezes the perfect tetrahedron by a couple of degrees.
Answer:
Cr3+ is green and V2+ is purple. Cr3+ and V2+ are both d3 so there can be a lot of movement between energy levels to produce colored light. Cd2+ and Hg2+ are both d10 (full d orbital, much less electron movement).
Explanation:
It is a Covalent bond because the electrons are shared between the two individual atoms. (Hydrogen is complete at 2 electrons)