Question

Assertion: The spectrum of He⁺ is expected to be similar to that of hydrogen.

Reason: He⁺ is also one electron system.

(a) Both A and R are true and R is the correct explanation of A  

(b) Both A and R are true but R is not correct explanation of A  

(c) A is true but R is false  

(d) A and R are false

Answer 1

Correct option (a) Both A and R are true and R is the correct explanation of A  

Explanation:

All species like He⁺, Li²⁺, Be³⁺ having one electron are expected to have similar spectrum as that of hydrogen.