1.

Assertion : the spectrum of He^(+) is expected to be similar to that of hydrogen Reason : He^(+) is also one electron system

Answer»

If both assertion and reason are trueand reason is the correct EXPLANATION of assertion.
If both assertion and reason are true but reason is no the correct EXPLANTION of assertion.
If assertion is true but reason are FLASE
If both assertion and reason are false

ANSWER :A


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