Question

The total energy of an electron in an atom in an orbit is $-3.4eV$ . Its kinetic and potential energies arc, respectively:

• A. 3.4 eV, -6.8 eV
• B. 3.4 eV. 3.4 eV
• C. -3.4 eV, - 3.4 eV
• D. -3.4 eV, -6.8 eV

Answer 1

Answer: (A)

In Bohr's model of H atom
$\therefore K.E.=\left|TE\right|=\frac{|U|}{2}$
$\therefore K.E.=3.4eV$
$U=-6.8eV$