What is the net ionic charge of a calcium ion?
a. +1
b. -1
c. -2
d. +2

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

Fine out your self ponk

C. definite shape, definite volume. that is a solid.