Question

After the transfer of electrons, calcium becomes an ion with a charge of ___ field 5 Type here and oxygen becomes an ion with a charge of ____ field 6 Type here.

Answer 1

Calcium becomes an ion with a charge of 2+

Oxygen becomes an ion with a charge of -2

Step-by-step explanation:

since calcium lost two electrons, it has 20protrons, but only 18 electrons. this makes calcium a positive ion with a charge of 2+

An oxygen molecule consists of two oxygen atoms that have a double bond between each other and share valence electrons. the oxygen ion is formed when the atom of oxygen gains two valence electrons. this results in an oxygen ion with a charge of -2