Preparing for the Joint Entrance Exam (JEE) can be a daunting task. With so many subjects to cover and so many topics to study, it can be challenging to know where to start. One essential topic in the JEE Mains syllabus is the Structure of Atom. In this article, we will provide 50+ MCQ questions on the Structure of Atom, along with detailed solutions to help you prepare for the JEE Mains exam.
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These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Structure of Atom JEE Mains MCQ Questions with Answers.
Structure of Atom JEE Mains MCQ
Which of the following subatomic particles has the least mass?
a) Electron
b) Proton
c) Neutron
d) Positron
The maximum number of electrons that can be accommodated in an f-subshell is:
a) 2
b) 6
c) 10
d) 14
The azimuthal quantum number (l) determines the:
a) Shape of the orbital
b) Energy of the orbital
c) Orientation of the orbital
d) Spin of the electron
The quantum numbers that describe an electron completely are:
a) n and l
b) n, l, and m
c) n, l, m, and s
d) n, l, m, s, and p
The number of unpaired electrons in the ground state of nitrogen atom is:
a) 0
b) 1
c) 2
d) 3
The shape of a p-orbital is:
a) Spherical
b) Linear
c) Dumbbell-shaped
d) Tetrahedral
The electronic configuration of Cr (chromium) is [Ar] 3d^5 4s^1. This configuration violates:
a) Aufbau principle
b) Pauli exclusion principle
c) Hund’s rule
d) Octet rule
The energy of an electron in an atom is given by its:
a) Principal quantum number (n)
b) Azimuthal quantum number (l)
c) Magnetic quantum number (m)
d) Spin quantum number (s)
The ionization energy generally:
a) Increases across a period and decreases down a group
b) Decreases across a period and increases down a group
c) Increases both across a period and down a group
d) Decreases both across a period and down a group
The wavelength of electromagnetic radiation emitted during the transition of an electron from n=3 to n=2 in the hydrogen atom is approximately:
a) 122 nm
b) 244 nm
c) 366 nm
d) 488 nm
The maximum number of electrons that can be accommodated in the second energy level of an atom is:
a) 2
b) 8
c) 18
d) 32
The shape of an s-orbital is:
a) Spherical
b) Linear
c) Dumbbell-shaped
d) Tetrahedral
The quantum number that indicates the orientation of an orbital in space is the:
a) Principal quantum number (n)
b) Azimuthal quantum number (l)
c) Magnetic quantum number (m)
d) Spin quantum number (s)
The ground state electron configuration of oxygen (O) is:
a) 1s^2 2s^2 2p^4
b) 1s^2 2s^2 2p^6
c) 1s^2 2s^2 2p^2
d) 1s^2 2s^2 2p^1
The Pauli exclusion principle states that:
a) No two electrons in an atom can have the same set of quantum numbers
b) Electrons always occupy the lowest energy level available
c) Electrons in the same orbital must have opposite spins
d) Electrons fill orbitals in order of increasing energy
The effective nuclear charge experienced by an electron in a many-electron atom is:
a) Equal to the atomic number
b) Equal to the number of protons
c) Less than the atomic number due to shielding effect
d) Greater than the atomic number due to screening effect
The electronic configuration of sodium (Na) is:
a) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1
b) 1s^2 2s^2 2p^6 3s^1
c) 1s^2 2s^2 2p^6 3s^2 3p^6
d) 1s^2 2s^2 2p^6 3s^2 3p^5
The energy of an electron in a hydrogen atom is quantized. This means that:
a) The electron can have any energy value
b) The energy of the electron is continuous
c) The energy of the electron is restricted to certain specific values
d) The energy of the electron is inversely proportional to its mass
The ionization energy of an atom is the energy required to:
a) Remove an electron from the nucleus
b) Add an electron to the nucleus
c) Move an electron to a higher energy level
d) Move an electron to a lower energy level
The wavelength of electromagnetic radiation emitted during the transition of an electron from n=4 to n=2 in the hydrogen atom is approximately:
a) 434 nm
b) 486 nm
c) 656 nm
d) 820 nm
The atomic number of an element is determined by the number of:
a) Electrons
b) Protons
c) Neutrons
d) Nucleons
The quantum number that describes the spin of an electron is the:
a) Principal quantum number (n)
b) Azimuthal quantum number (l)
c) Magnetic quantum number (m)
d) Spin quantum number (s)
The Aufbau principle states that:
a) Electrons always occupy the lowest energy level available
b) Electrons in the same orbital must have opposite spins
c) Electrons fill orbitals in order of increasing energy
d) No two electrons in an atom can have the same set of quantum numbers
The electronic configuration of fluorine (F) is:
a) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^5
b) 1s^2 2s^2 2p^6 3s^2 3p^5
c) 1s^2 2s^2 2p^6
d) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6
The ground state electron configuration of silicon (Si) is:
a) 1s^2 2s^2 2p^6 3s^2 3p^2
b) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^2
c) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^3
d) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6
The maximum number of electrons that can be accommodated in the p-subshell is:
a) 2
b) 6
c) 10
d) 14
The electronic configuration of nitrogen (N) is:
a) 1s^2 2s^2 2p^6
b) 1s^2 2s^2 2p^3
c) 1s^2 2s^2 2p^6 3s^2 3p^5
d) 1s^2 2s^2 2p^6 3s^2 3p^3
The quantum numbers that define the shape and orientation of an orbital are:
a) Principal quantum number (n) and azimuthal quantum number (l)
b) Azimuthal quantum number (l) and magnetic quantum number (m)
c) Magnetic quantum number (m) and spin quantum number (s)
d) Principal quantum number (n), azimuthal quantum number (l), and magnetic quantum number (m)
The energy level with the highest energy in a hydrogen atom is:
a) n = 1
b) n = 2
c) n = 3
d) n = 4
The electronic configuration of calcium (Ca) is:
a) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2
b) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^2
c) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2
d) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^2
We hope there JEE MCQ of Class 11 Structure of Atom will help you to score an excellent rank in JEE Mains and Advanced. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
