How do you draw Bohr models of carbon and oxygen atoms? Also which has a greater electronegativity and why?

Question

How do you draw Bohr models of carbon and oxygen atoms? Also which has a greater electronegativity and why?

Answer 1

The Bohr model puts electrons in circular orbits around the nucleus that correspond only to the principle quantum #. It does not distinguish the subshells (s, p, d, etc).

Carbon is 1s2 2s2 2p2

So in the Bohr model there would be two concentric circular orbits for n = 1 and n = 2 shells. The smaller n = 1 orbit would have two electrons and the larger n = 2 orbit 4 electrons.

oxygen is 1s2 2s2 2p4

again two orbits; n = 1 with 2 electrons and n = 2 with 6

Oxygen has the greater electronegativity because it has a greater effective nuclear charge (Zeff)