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Q.

Which of the following statement is not correct for an electron in a hydrogen atom excited from ground state to first excited state?

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a

Its kinetic energy increases by 10.2 eV

b

Its kinetic energy decreases by 10.4 eV

c

Its potential energy increases by 20.4 eV

d

Its angular momentum increases by 1.05×10−34Js

answer is A.

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Detailed Solution

As the electron goes from lower orbit to higher orbit, the kinetic energy decreases according to the equation|K.E|=13.6112−122⇒|K.E|=10.2eV
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Which of the following statement is not correct for an electron in a hydrogen atom excited from ground state to first excited state?