WBJEE SERIES Chemistry
Structure Of Atom
13 previous year questions.
Volume: 13 Ques
Yield: Medium
High-Yield Trend
1
2023 1
2019 2
2016 1
2013 2
2012 2
2010 2
2009 2
2008 Chapter Questions 13 MCQs
01
PYQ 2008
medium
chemistry ID: wbjee-20
The electronic configuration represents a
1
metal atom
2
non metal atom
3
non-metallic anion
4
metallic cation
02
PYQ 2008
medium
chemistry ID: wbjee-20
Which of the following expressions gives the de-Broglie relationship?
1
2
3
4
03
PYQ 2009
medium
chemistry ID: wbjee-20
mole of photon, each of frequency would have approximately a total energy of :
1
1 erg
2
1 Joule
3
1 eV
4
1 MeV
04
PYQ 2009
medium
chemistry ID: wbjee-20
For the Paschen series the values of and in the expression are
1
2
3
4
05
PYQ 2010
medium
chemistry ID: wbjee-20
If a species has protons, electrons and neutrons, find the species and its charge
1
2
3
4
06
PYQ 2010
medium
chemistry ID: wbjee-20
In Sommerfeld?s modification of Bohr?s theory, the trajectory of an electron in a hydrogen atom is
1
a perfect ellipse
2
a closed ellipse - like curve, narrower at the perihelion position and flatter at the aphelion position
3
a closed loop on spherical surface
4
a rosette
07
PYQ 2012
medium
chemistry ID: wbjee-20
Which of the following does not represent the mathematical expression for the Heisenberg uncertainty principle?
1
2
3
4
08
PYQ 2012
medium
chemistry ID: wbjee-20
If the first ionization energy of atom is , then the ionization energy of He atom is
1
2
3
4
09
PYQ 2013
medium
chemistry ID: wbjee-20
Identify the CORRECT statement
1
Quantum numbers are obtained arbitrarily
2
All the Quantum numbers for any pair of electrons in an atom can be identical under special circumstance
3
All the Quantum numbers for any pair of electrons in an atom cannot be identical under special circumstance
4
All the quantum numbers are required to describe an electron of an atom completely
10
PYQ 2016
medium
chemistry ID: wbjee-20
The maximum number of 2p electrons with electronic spin are
1
6
2
0
3
2
4
3
11
PYQ 2016
medium
chemistry ID: wbjee-20
For the order in which their ionic radii varies is
1
2
3
4
12
PYQ 2019
medium
chemistry ID: wbjee-20
Which one of the following electronic arrangements is absurd ?
1
n = 3, l = 1, m = -1
2
n = 3, l = 0, m = 0
3
n = 2, l = 0, m = -1
4
n = 2, l = 1, m = 0
13
PYQ 2023
medium
chemistry ID: wbjee-20
An electron in the 5d orbital can be represented by the following(n,1,mr) values
1
(5,2,1)
2
(5,1,-1)
3
(5,0,1)
4
(5,2,-1)