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Assertion The radius of second orbit of ...

Assertion The radius of second orbit of hydrogen atom is `2.1Å`
Reason Radius of nth orbit of hydrogen atom `r_(n)propn^(2)`

A

If both Assertion and Reason ar true and Reason is the correct explanation of Assertion.

B

If both Assertion and Reason are true but Reason is not correct explanation of Assertion

C

If Assertion is true by Reason is false.

D

If Assertion is false but Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
B
Radius of Bohr's orbit `rpropn^(2)`
`rArr " " (r_(1))/(r_(2))=((n_(1))/(n_(2)))^(2)rArr=(5.29xx10^(-11))/(r_(2))=((1)/(2))^(2)`
`rArr" " r_(2)=5.29xx10^(-11)xx4=21.16xx10^(-11)m`
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