How is the valence of calcium determined?

To find the valency of calcium you should know its atomic number… Atomic no. = 20 Electronic configuration = 2,8,8,2 We know that the outermost shell of Calcium must have 8 electrons. read more

Calcium has 20 electrons so they are arranged 2. 8. 8. 2 Using orbital notation the electron structure is: 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2) You can see that there are 2 electrons in the outer energy level and these are the valence electrons. read more

The words valence and valency have two related meanings in chemistry. Valence describes how easily an atom or radical can combine with other chemical species. This is determined based on the number of electrons that would be added, lost or share if it reacts with other atoms. read more