Question

A calcium atom has {Fill in the blank} valence electrons. It needs to transfer {Fill in the blank} electrons to oxygen to have a full outer shell. An oxygen atom has {Fill in the blank} valence electrons. It needs to accept {Fill in the blank} electrons from calcium to have a full outer shell.
After the transfer of electrons, calcium becomes an ion with a charge of {Fill in the blank} and oxygen becomes an ion with a charge of {Fill in the blank}.
.

Answer 1

Answer:

2 , 2, 6,2,+2,-2

Explanation:

A calcium atom has 2 valence electrons. It needs to transfer 2 electrons to oxygen to have a full outer shell. An oxygen atom has 6 valence electrons. It needs to accept 2 electrons from calcium to have a full outer shell.

After the transfer of electrons, calcium becomes an ion with a charge of +2 and oxygen becomes an ion with a charge of -2