The total energy of an electron in an atom in an orbit… | Bohr Model – Energy of an Electron in an Orbit

The total energy of an electron in an atom in an orbit is -3.4 eV. Its kinetic and potential energies…

20 2019 Atoms Bohr Model – Energy of an Electron in an Orbit Medium

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

A $-3.4\ eV,\ -3.4\ eV$

B $-3.4\ eV,\ -6.8\ eV$

C $3.4\ eV,\ -6.8\ eV$

D $3.4\ eV,\ 3.4\ eV$

Detailed Solution

In Bohr's model, $K.E.=-T.E.$ and $U=2\,T.E.$ Given $T.E.=-3.4\ eV$ $\Rightarrow K.E.=3.4\ eV$ $\Rightarrow U=2(-3.4)=-6.8\ eV$