Question

how many valence electrons will an atom of oxygen have? 3 4 5 6

Explanation:

Oxygen has an atomic number of 8. Its electron configuration is \(1s^{2}2s^{2}2p^{4}\). The valence electrons are in the second shell (\(n = 2\)). The sum of electrons in \(2s\) (\(2\) electrons) and \(2p\) (\(4\) electrons) is \(2 + 4=6\).

Answer:

6