Structure of Atom NEET 2026 Practice Test | Most Repeated Questions
Structure of Atom – NEET 2026 Practice Test
This quiz contains
most repeated NEET questions
from
Structure of Atom
. All questions are NEET level and very important for exams.
If radius of second Bohr orbit of the He
+
ion is 105.8 pm, what is the radius of third Bohr orbit of Li
2+
ion?
158.7 pm
15.87 pm
1.587 pm
158.7 Å
A particular station of All India Radio, New Delhi broadcasts on a frequency of 1,368 kHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is : [Speed of light c = 3.0 × 10
8
ms
−1
]
21.92 cm
219.3 m
219.2 m
2192 m
The correct set of four quantum numbers for the valence electron of rubidium atom (Z = 37) is
5, 1, 1, +1/2
6, 0, 0, +1/2
5, 0, 0, +1/2
5, 1, 0, +1/2
The energies E
1
and E
2
of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths i.e., λ
1
and λ
2
will be
λ
1
= λ
2
λ
1
= 2λ
2
λ
1
= 4λ
2
λ
1
= 1/2 λ
2
Two electrons occupying the same orbital are distinguished by
azimuthal quantum number
spin quantum number
principal quantum number
magnetic quantum number
Be
2+
is isoelectronic with which of the following ions ?
H
+
Li
+
Na
+
Mg
2+
The ratio of the wavelengths of the light absorbed by a Hydrogen atom when it undergoes n = 2 → n = 3 and n = 4 → n = 6 transitions, respectively, is
1/9
1/4
1/36
1/16
The relation between n
m
(n
m
= the number of permissible values of magnetic quantum number (m)) for a given value of azimuthal quantum number (l), is
l = 2n
m
+ 1
n
m
= 2l
2
+ 1
n
m
= l + 2
l = (n
m
− 1) / 2
According to law of photochemical equivalence the energy absorbed (in ergs/mole) is given as (h = 6.62 × 10
−27
ergs, c = 3 × 10
10
cm s
−1
, N
A
= 6.02 × 10
23
mol
−1
)
1.196 × 10
8
/ λ
2.859 × 10
5
/ λ
2.859 × 10
16
/ λ
1.196 × 10
16
/ λ
Maximum number of electrons in a subshell of an atom is determined by the following
2l + 1
4l − 2
2n
2
4l + 2
SUBMIT PRACTICE TEST
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