# Atomic Structure MCQ Question with Answer

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

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Question No : 8
Which of the following atoms has a non-spherical outermost orbital.

H
Li
Be
B

Question No : 9
The number of neutrons present in ${}_{19}{}^{39}K$ are

28
39
20
19

Question No : 10
In Lyman series an electron jumps from higher energy level to

K energy level
M energy level
N energy level
L energy level

Question No : 11
The wavelength of an electron

is equal to that of light
remains constant with velocity
decreases with an increasing velocity
increases with an decreasing velocity

Question No : 12
No two electrons in an atom can have the same values of all four quantum numbers according to

Hund's rules
Flemming rule
Pauli's exclusion principle
Bohr theory

Question No : 13
The charge on an atom of ${}_{13}{}^{27}Al$ is

+40
+27
+14
Zero

Question No : 14
Bohr's concept of the orbit in an atom was contradicted by

de Broglie relationship
Uncertainty principle
Planck's hypothesis
Hund's rule