Observe the following trends in the periodic properties, in the periodic table

Identify the properties X, Y, P and Q respectively

Options

A. Effective nuclear change, Non-metallic character, Atomic size, Metallic character
B. Metallic character, Electronegativity, Effective nuclear charge, Valency
C. Atomic size, Metallic character, Valency, Non-metallic character
D. Valency, Non-metallic character, Electronegativity, Effective nuclear charge

Answer

A

Explanation

As we move across the period, the extra electrons get added to the same shell so, effective nuclear charge increases. Metallic character decreases, but non-metallic character increases across the period. As we move down the group, atomic size increases due to gradual increase in the number of shells. Also, metallic character increases down the group.