1
Question
Match the following rules with their statements :
Rules
Statements
A
Hund’s Rule
(i)
No two electrons in an atom can have the same set of four quantum numbers.
B
Aufbau Principle
(ii)
Half-filled and completely filled orbitals have extra stability.
C
Pauli Exclusion Principle
(iii)
Pairing of electrons in the orbitals belonging to the same subshell does not take place until each orbital is singly occupied.
D
Heisenberg’s Uncertainty
(iv)
It is impossible to determine the exact position and exact momentum of a subatomic particle simultaneously.
(v)
In the ground state of atoms, orbitals are filled in the order of their increasing energies
| Rules | Statements | ||
| A | Hund’s Rule | (i) | No two electrons in an atom can have the same set of four quantum numbers. |
| B | Aufbau Principle | (ii) | Half-filled and completely filled orbitals have extra stability. |
| C | Pauli Exclusion Principle | (iii) | Pairing of electrons in the orbitals belonging to the same subshell does not take place until each orbital is singly occupied. |
| D | Heisenberg’s Uncertainty | (iv) | It is impossible to determine the exact position and exact momentum of a subatomic particle simultaneously. |
| (v) | In the ground state of atoms, orbitals are filled in the order of their increasing energies |
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Solution
Analyzing and understanding all the options given
(i) The Hund's Rule of maximum multiplicity states that pairing of electrons in the orbitals belonging to the same subshell takes place
only when each orbital is singly occupied.
(ii) Aufbau Principle states that in the ground state of an atom, the electrons occupy atomic orbitals of the lowest energy levels before occupying orbitals of higher levels
i.e. orbitals are filled in the increasing order of their energies.
(iii) The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.
(iv) Heisenberg's Uncertainty principle states that exact position and exact momentum of a subatomic particle cannot be measured simultaneously.
Conclusion:
Hence, the final matches are
Rules
Statements
A
Hund’s Rule
(iii)
Pairing of electrons in the orbitals belonging to the same subshell does not take place until each orbital is singly occupied.
B
Aufbau Principle
(v)
In the ground state of atoms, orbitals are filled in the order of their increasing energies
C
Pauli Exclusion Principle
(i)
No two electrons in and atom can have the same set of four quantum numbers.
D
Heisenberg’s Uncertainty
(iv)
It is impossible to determine the exact position and exact momentum of a subatomic particle simultaneously.
(i) The Hund's Rule of maximum multiplicity states that pairing of electrons in the orbitals belonging to the same subshell takes place
only when each orbital is singly occupied.
(ii) Aufbau Principle states that in the ground state of an atom, the electrons occupy atomic orbitals of the lowest energy levels before occupying orbitals of higher levels
i.e. orbitals are filled in the increasing order of their energies.
(iii) The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.
(iv) Heisenberg's Uncertainty principle states that exact position and exact momentum of a subatomic particle cannot be measured simultaneously.
Conclusion:
Hence, the final matches are
| Rules | Statements | ||
| A | Hund’s Rule | (iii) | Pairing of electrons in the orbitals belonging to the same subshell does not take place until each orbital is singly occupied. |
| B | Aufbau Principle | (v) | In the ground state of atoms, orbitals are filled in the order of their increasing energies |
| C | Pauli Exclusion Principle | (i) | No two electrons in and atom can have the same set of four quantum numbers. |
| D | Heisenberg’s Uncertainty | (iv) | It is impossible to determine the exact position and exact momentum of a subatomic particle simultaneously. |
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