Question

The oxygen anion in carbon monoxide has an atomic number of 8, an atomic mass of 16, and an electrical charge of -2. how many electrons does the oxygen anion have?

Answer 1

Step-by-step explanation:

Oxygen has atomic number eight. This means that the nuclei of all oxygen atoms have eight protons. A neutral oxygen atom will also have eight electrons.

In an oxygen ion with a

2

−

charge, the number of protons is still 8, but the number of electrons is 10.

This results in the oxygen ion having an octet (8) of valence electrons.