1.

Electron fall from n=3 to n=2 ,then emitted energy is :

Answer»

ENERGY of n= 2 is -328.32 KJ / mole
Energy of n= 3 is - 145.92kj / mole

So
E3 - E2 = - 145.92 - (-328.32)
= 182.4 kj / mole. ..


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