# Atomic Structure MCQ Question with Answer

## Atomic Structure MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 15
The velocity of a photon is

dependent on its wavelength
dependent on its source
equal to cube of its amplitude
independent of its wavelength

Question No : 16
The number of unpaired electrons in fluorine atoms is/are

4
2
1
0

Question No : 17
Among the following ions, which are has the highest paramagnetism?

$\left[Cr\left({H}_{2}O{\right)}_{6}{\right]}^{+3}$
$\left[Fe\left({H}_{2}O{\right)}_{6}{\right]}^{+2}$
$\left[Cu\left({H}_{2}O{\right)}_{6}{\right]}^{+2}$
$\left[Zn\left({H}_{2}O{\right)}_{6}{\right]}^{+2}$

Question No : 18
In the case of atomic spectrum of hydrogen which series of lines lie in the visible region?

Balmer
Paschen
Pfund
None of these

Question No : 19
When the electron is excited from K level to M level we get

$\gamma$- rays
cathode rays
continuous spectra
absorption spectra

Question No : 20
Isotopes have different

arrangement of electrons
no. of P and e'
no. of neutrons
no. of electrons

Question No : 21
Davisson and Germer gave an experimental evidence for

wave nature of electron
particle nature of electron
particle nature of light
wave nature of light