Assertion: `K^(+) and NH_(4)^(+)` ions have many similarities in their test
Reason: Radius of `K^(+)` is almost equal to radius `NH_(4)^(+)`

Options

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

Answer

A

Explanation

Ionic radius of `NH_(4)^(+)` is almost equal to ionic radius of `K^(+)`