Question

. In the modern periodic table A and B are two elements belonging to 2nd and 16th group respectively and both of them belong to the second period. The chemical formula of the compound obtained when these two elements react with . In the modern periodic table A and B are two elements belonging to 2nd and 16th group respectively and both of them belong to the second period. The chemical formula of the compound obtained when these two elements react with each other is, (A) A2B (B) AB (C) AB2 (D) A3B.

Answer 1

b)AB

Be have valency 2

O have valency 2

so they cross to become AB