Question 285: Atoms & Nuclei

Question

A hydrogen atom, initially in the ground state is excited by absorbing a photon of wavelength 980$$\mathop A\limits^ \circ  $$. The radius of the atom in the excited state, in terms of Bohr radius a0 will be : (hc = 12500 eV$$\mathop A\limits^ \circ  $$)

Accepted Answer

Energy of photon  $$ = {{12500} \over {980}} = 12.75eV$$
$$ 	herefore $$  Electron will excite to n = 4
Since 'R' $$ \propto $$ n
2
$$ 	herefore $$  Radius of atom will be 16a
0

Answer

4a0

Answer

9a0

Answer

25a0

Answer

16a0

Atoms & Nuclei

A hydrogen atom, initially in the ground state is excited by absorbing a photon of wavelength 980$\mathop A\limits^ \circ . The radius of the atom in the excited state, in terms of Bohr radius a0 will be : (hc = 12500 eV\mathop A\limits^ \circ $)

Choose the correct answer: