18
It would have to lose two electrons.
It loses 2 electrons.
2 electrons are lost from calcium, forming Ca2+ ion
Calcium normally has 20 electrons. Because it has a plus 2 charge, it must have two less electrons. Therefore, the calcium ion has 18 electrons.
It looses two.
A Calcium ion with a -1 net charge would have 21 electrons. Calcium as a stable element has 20 electrons.
Ca2+ is a cation formed by Calcium to become stable and attain the noble gas configuration of Argon. Calcium forms this cation by losing two electrons
Calcium loses its two valence electrons to become Ca 2+ ion.
It would have to lose two electrons.
None.Calcium loses 2 electrons to form an ion.
2.8.8.2
20
It loses 2 electrons.
2 electrons are lost from calcium, forming Ca2+ ion
8
20
2