Question

31.
Four elements A, B, C, and D have 3, 4, 2, 7 electrons
respectively in the outermost shell.
a. To which group does element B belong in
the modern periodic table.
b. What is the valency of element D?
Identify the nature of the oxide formed by
the element C
E (21) (22​

Answer 1

Answer:

a) B belongs to the 14th Group.

b) element D will have a valency of 1.

The oxide of element C will be basic in nature.

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