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The energy of electron in first energy level is -21.79*10-12erg per atom. What would be the energy of electron in second energy level?

Md Ariful Islam

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Md Ariful Islam

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The total energy, E of the electron is the sum of kinetic energy and potential energy. Kinetic energy of the electron = ½ mv2 Potential energy = -KZe2 /r Total energy = 1/2 mv2 – KZe2 /r Total energy (E) = KZe2 /2r – KZe2 /r = -KZe2 /2r Substituting for r, gives us E = 2π2mZ2e'K2/n2h2 where n = 1, 2, 3……… Only certain energies are allowed to the electron. This energy expression consist of many fundamental constant. The simplified expression: E = –21.79x10–12 x z2n2 erg per atom The energy of electron in second energy level would be: E = –87.16x10–12 erg per atom.
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