Question

The ground state electron configuration of the silicon atom is characterized by which of the following?
I. Partially filled 3p orbitals
II. The presence of unpaired electrons
III. Six valence electrons

• A. I only
• B. II only
• C. I and II only
• D. I and III only
• E. I, II, and III

Answer 1

Answer: (C)

I and II only

$Si=\left[Ne\right]3s^{2}3p^2$

Partially filled p-orbital having unpaired electrons.

4 valence electrons.