Question

question 5
carbon has ___ valence electrons.
a 2
b 5
c 4

Explanation:

Carbon's atomic number is 6. Its electron configuration is \(1s^{2}2s^{2}2p^{2}\). The valence electrons are in the outermost shell (\(n = 2\)). The number of electrons in \(2s^{2}2p^{2}\) is \(2 + 2=4\).

Answer:

C. 4