Question

Name the following:
a. A divalent metallic element.
b. A trivalent metallic element.
c. The cation in the compound NaCl.
d. The anion in the compound CaCO3.
e. A metal having variable valency of two and three.
f. A negative divalent ion.

Answer 1

Answer:

Hii..

a. Magnesium.

b. Manganese.

c. In NaCl, the cation is, N^+.

d. For formation of calcium carbonate, calcium will lose two valence electrons to form cation and carbonate is having an oxidation state of -2 called as anion.

e. Aluminium Phosphate(AlPO4) because Al has valency +3 and PO4 valency -3.

f. S^-2 is a negative diatomic ion because it gain two electrons. similarly oxygen is also negative diatomic ion.

Hope it helps you dear!