Question

Based on the group valency of elements write the molecular
formula of the following compounds giving justification for each :
(1) Oxide of first group elements.
(ii) Halide of the elements of group thirteen, and
(ü) Compound formed when an element, A of group 2 combines
with an element, B of group seventeen.
​

Answer 1

Answer:

Based on the group valency of elements is Oxide of first group element

Answer 2

Answer:

Oxide of first group element.

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