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In the multi-electron atom, which of the following orbitals described by the three quantum numbers will have the same energy in the absence of magnetic and electric field?

i) n=1, l=0, m=0
ii) n=2, l=0, m=0
iii) n=2, l=1, m=1
iv) n=3, l=2, m=1
v) n=3, l=2, m=0

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Important Questions on Structure of Atom

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