Question

Calcium Is In Group II and chlorine is in Group VII of the Periodic Table.

Explain, in terms of number of outer shell electrons and electron transfer, how calcium atoms
and chlorine atoms form ſons.
Give the formulae of the ions formed.​

Answer 1

Answer:

Chloride atoms have seven electrons in their outer shell, which can be determined from the fact they are in group 7 of the periodic table. ... So calcium loses two electrons forming a Ca2+ ion and two chlorine atoms gain one electron each forming 2 Cl- ions.