Here we will provide you the 50+ MCQ Questions of Structure of Atom for NEET-UG. Structure of Atom is the chapter 1 in Class XI or Class 11 Chemistry NCERT Unit Structure of Atom NEET (conducted by NTA) is based on the NCERT book.
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Structure of Atom NEET MCQ
The number of electrons in the outermost shell of an atom is known as its:
a) Atomic number
b) Mass number
c) Valence electrons
d) Isotopes
Who proposed the wave-particle duality of matter?
a) Albert Einstein
b) Max Planck
c) Louis de Broglie
d) Erwin Schrödinger
The maximum number of electrons that can occupy an orbital is:
a) 1
b) 2
c) 3
d) 4
The energy required to remove an electron from an atom is known as:
a) Ionization energy
b) Electron affinity
c) Electronegativity
d) Atomic radius
The atomic radius of an atom:
a) Increases as you go from left to right across a period
b) Decreases as you go from top to bottom within a group
c) Increases as you go from top to bottom within a group
d) Decreases as you go from left to right across a period
The number of electrons that can occupy the d subshell is:
a) 2
b) 6
c) 10
d) 14
Which of the following elements has the highest electronegativity value?
a) Carbon
b) Oxygen
c) Fluorine
d) Neon
The number of protons in an atom is also known as its:
a) Atomic number
b) Mass number
c) Neutron number
d) Isotope number
Which of the following is a subatomic particle with a positive charge?
a) Electron
b) Proton
c) Neutron
d) Isotope
The Bohr model of the atom is primarily based on:
a) Wave-particle duality
b) Quantum mechanics
c) Electromagnetic radiation
d) Energy levels
Which of the following is not true about isotopes?
a) They have the same atomic number
b) They have the same number of protons
c) They have different number of neutrons
d) They have the same physical and chemical properties
The number of orbitals in a p subshell is:
a) 1
b) 3
c) 5
d) 7
The quantum number that describes the orientation of an orbital in space is:
a) Principal quantum number (n)
b) Azimuthal quantum number (l)
c) Magnetic quantum number (m)
d) Spin quantum number (s)
The phenomenon in which an electron absorbs energy and jumps from a lower energy level to a higher energy level is known as:
a) Emission
b) Absorption
c) Ionization
d) Excitation
The energy of an electron in an atom is quantized, meaning that it can only have certain discrete values. This was first proposed by:
a) J.J. Thomson
b) Ernest Rutherford
c) Niels Bohr
d) Erwin Schrödinger
Which of the following is a subatomic particle with a neutral charge?
a) Electron
b) Proton
c) Neutron
d) Isotope
The quantum number that describes the shape of an orbital is:
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 carbon is:
a) 1s2 2s2 2p2
b) 1s2 2s2 2p4
c) 1s2 2s2 2p6
d) 1s2 2s1 2p3
The number of electrons that can occupy the f subshell is:
a) 2
b) 6
c) 10
d) 14
The atomic mass of an atom is primarily due to the presence of:
a) Electrons
b) Protons
c) Neutrons
d) Isotopes
The quantum number that describes the size of an orbital is:
a) Principal quantum number (n)
b) Azimuthal quantum number (l)
c) Magnetic quantum number (m)
d) Spin quantum number (s)
The element with the electron configuration [Kr] 5s1 is in which period and group of the periodic table?
a) Period 5, Group 1
b) Period 5, Group 11
c) Period 6, Group 1
d) Period 6, Group 11
The maximum number of electrons that can occupy the first shell of an atom is:
a) 2
b) 6
c) 8
d) 10
Which of the following statements is true about the quantum numbers of an electron in an atom?
a) Only one electron in an atom can have the same set of quantum numbers
b) The principal quantum number (n) can have a value of zero
c) The azimuthal quantum number (l) can have a value of one
d) The spin quantum number (s) can have a value of +2/3
The element with the electron configuration [Kr] 4d10 5s2 5p5 is in which period and group of the periodic table?
a) Period 5, Group 15
b) Period 6, Group 17
c) Period 6, Group 15
d) Period 5, Group 17
Which of the following is not true about the energy levels of electrons in an atom?
a) The higher the energy level, the further the electron is from the nucleus
b) The energy levels are quantized
c) Electrons can move from one energy level to another by absorbing or emitting energy
d) All energy levels have the same energy
The quantum number that describes the spin of an electron is:
a) Principal quantum number (n)
b) Azimuthal quantum number (l)
c) Magnetic quantum number (m)
d) Spin quantum number (s)
Which of the following elements has the highest ionization energy value?
a) Sodium
b) Magnesium
c) Aluminum
d) Silicon
The electron configuration of an ion is different from its corresponding neutral atom because:
a) The number of electrons is different
b) The number of protons is different
c) The number of neutrons is different
d) The number of energy levels is different
Which of the following statements is true about the electron configuration of an atom?
a) An atom always has the same number of electrons in each energy level
b) An atom always has the same number of electrons in each subshell
c) An atom can have different electron configurations depending on its ionization state
d) An atom can have different electron configurations depending on its mass number
We hope there NEET MCQ of Class 11 Structure of Atom will help you to score an excellent rank in NEET-UG. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
