Which level of the single ionized carbon has the same energy as the ground state energy of hydrogen atom?

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answer is A.

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Detailed Solution

Energy of carbon in nth state = energy of hydrogen atom in ground state−13.6 zc2n2=−13.6 zh2ng2 ⇒-13.6(6)2n2=−13.6(1)2(1)2 ⇒ n2=62 ⇒ n=6

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