Question

What is the last sublevel filled for carbon?

Answer 1

2s subshell

Explanation:

Carbon has 6 electrons. The electronic configuration of carbon is `1s^2 - 2s^2 - 2p^2`. This is assuming the carbon atom is unhybridised.

Since the 2p subshell still lacks 4 electrons to be fully filled, the last filled subshell would be the 2s subshell.