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Answered

calculate the energy required to excite an electron from n=2 to n=4​

Answer :

SHIVAM81GO

Explanation:

taking atom as hydrogen than

answer is +2.55

just apply Delta energy=energy in 4th orbit -energy in 2nd orbit

[tex]energy = - 13.6 \times z ^{2} \div n {}^{2} [/tex]

so here you can find answer

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