Question

Identify the same group
elements among the
following:
​

Answer 1

Answer:

P, R and T

Explanation:

The elements of a group have the same number of valence electrons.

P - 1 valence electron (Lithium)

Q - 5 valence electrons (Phosphorus)

R - 1 valence electron (Sodium)

S - 2 valence electrons (Magnesium)

T - 1 valence electron (Potassium)

Since P, R and T have same number of valence electrons (1), they belong to the same group.