Question

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
C. If Assertion is true statement but Reason is false.
D. If Assertion is false and Reason is true.

a)Assertion: First period is the smallest period in the periodic table.
Reason : Two elements hydrogen and helium belongs to first period
b) Assertion: Atomic Size increases in a group.
Reason: Addition of shells while moving in a group increases the size of the atom.
c) Assertion: Number of valence shells are different of the elements of the same group.
Reason: Number of valence shells increases across the period.

Answer 1

Answer:

a) B b) A c) C

Explanation:

hope it helps

Answer 2

Answer:

a) A

b) A

c) there is only one valence shell which is outer most