Question

Type in the correct values to correctly represent the valence electron configuration of oxygen: AsB2pC

Answer 1

Answer: A=2,  B=2 and  C=4

Explanation: Oxygen is the element with atomic number 8 and thus contains 8 electrons which are filled in order of increasing energy levels.

$O:8:1s^22s^22p^4$

The valence electrons are electrons which are present in the valence shell i.e. the last shell. Thus the valence electrons of Oxygen are in shell 2 in which s orbital contains two electrons and the p orbital contains 4 electrons.

Thus A= 2, B=2 and C=4.

Answer 2

The electron configuration for Oxygen would be 1s2 2s2 2p4

A = 1
B =2
C =4.

Here are the values.