Test help What charge would Ca have in CaI2
A) 1+
B)2+
C)1-
D)2-
E) Calcium would not have any charge

I think it is b.) 2

i took this test

Engineers have contribute to society in many ways like making the technology we use today or any type of power energy material

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts