The Bohr's energy equation for $\mathrm{H}$ atom reveals that the energy level of a shell is given by…
The Bohr's energy equation for $\mathrm{H}$ atom reveals that the energy level of a shell is given by $\mathrm{E}=-13.58 / \mathrm{n}^{2} \mathrm{eV}$. The smallest amount that an $\mathrm{H}$ atom will absorb if in ground state is
$1.0 \mathrm{eV}$
$3.39 \mathrm{eV}$
$6.79 \mathrm{eV}$
$10.19 \mathrm{eV}$
Solution
The smallest value of energy of an electron in $\mathrm{H}$ atom in ground state can absorb is $=\mathrm{E}_{2}-\mathrm{E}_{1}$
$=\frac{-13.58}{4}-\left(\frac{-13.58}{1}ight)=10.19$