Study Companion

For more NEET and AIIMS mcq on Structure of Atom Visit
Q240) In hydrogen atom, energy of first excited state is –3.4 eV. Then find out KE of same orbit of hydrogen atom


K= −TotalEnergy(E)=3.4eV
Negative kinetic energy equals half the potential energy (−K = ½U).
Potential energy equals twice the total energy (U = 2E).
Total energy equals negative kinetic energy (E = −K).
Twice the kinetic energy plus the potential energy equals zero (2K + U = 0).
This is a key relationship for a larger problem in orbital mechanics known as the virial theorem.