Q.

What is the angular momentum of an electron in Bohr's hydrogen atom whose energy is -0.544 eV?

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a

hπ

b

2hπ

c

5h2π

d

7h2π

answer is C.

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Detailed Solution

By using E=−13.6n2eV            for  H2  atom⇒−0.544=−13.6n2⇒n2=25⇒n=5∴Angular  momentum =nh2π=5h2π.
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What is the angular momentum of an electron in Bohr's hydrogen atom whose energy is -0.544 eV?