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The goingg St...

Question

The goingg State energy of h atom is -13.6eV . What is potential and kinetic energy?

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Solution

Kinetic energy of electron is given by KE=(kze²)/2r
Potential energy of electron is given by PE= -(kze²)/r
P.E= −2(K.E)--------(1) [KE=kinetic energy, PE=potentialenegy]

total energy=PE+KE=-2KE+KE=-KE
so -KE=-13.6 so KE=13.6
now, from equation 1 ,PE=-2KE=-(2x13.6)= -27.2, so PE=-27.2

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