Atomic Structure MCQ Question with Answer

Question No : 22
The atomic structure of an atom of an element is Is $1s^2, 2s^{2}2p^6, 3s^{2}3p^6$. The element is

Question No : 23
The size of nucleus is

Question No : 24
Isotones have same

Question No : 25
The number of unpaired electrons in the ground state of chromium is

Question No : 26
The wavelength of an electron moving with a velocity $5\times {10}^{5}m se{c}^{-1} is (h=6.63 \times {10}^{-34} kg m^{2 }se{c}^{-1})$ 

Question No : 27
The maximum number of electrons in a sub-energy level is equal to

Question No : 28
Electronic configuration of $C{u}^{+}$ is