Question

calulate number of protons , electrons in following elements. (a)ca2+ (b) sc2+ (c)n3- (d)al3+​

Answer 1

Answer:

ca+2{e=18, p=20}, sc+2{e=19,p=21},n3-{e=10,p=7}

al3+{e=10, p=13}

Explanation:

+charge indicate loss of electrons

-charge indicate gain of electrons

protons doesn't change their number