Which of the following options does not represent ground state electronic configuration of an atom?

1. 1s22s22p63s23p63d84s2

2. 1s22s22p63s23p63d94s2

3. 1s22s22p63s23p63d104s1

4. 1s22s22p63s23p63d54s1

Subtopic:  Pauli's Exclusion Principle & Hund's Rule |
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The pair of ions having the same electronic configuration is -

1.  Cr3+, Fe3+

2.  Fe3+, Mn2+

3.  Fe3+, Co3+

4.  Sc3+, Cr3+

Subtopic:  Pauli's Exclusion Principle & Hund's Rule |
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Match the following species with their corresponding ground state electronic configuration.

Atom/Ion Electronic configuration
A. Cu 1. 1s22s22p63s23p63d10
B. Cu2+ 2. 1s22s22p63s23p63d104s2
C. Zn2+ 3. 1s22s22p63s23p63d104s1
D. Cr3+ 4. 1s22s22p63s23p63d9
5. 1s22s22p63s23p63d3
 
A B C D
1. 4 2 5 1
2. 3 4 1 5
3. 3 2 1 4
4. 4 2 1 3
Subtopic:  Pauli's Exclusion Principle & Hund's Rule |
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Match the ensuing rules with the corresponding statements

Rules Statements
A. Hund’s Rule 1. No two electrons in an atom can have the same set of four quantum numbers.
B. Aufbau Principle 2. Half-filled and completely filled orbitals have extra stability.
C. Pauli's Exclusion Principle 3. 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 Principle 4. It is impossible to determine the exact position and exact momentum of a subatomic particle simultaneously.
5. In the ground state of atoms, orbitals are filled in the order of their increasing energies.
 
A B C D
1. 3 5 1 2
2. 1 2 3 4
3. 3 5 1 4
4. 4 5 3 2
Subtopic:  Pauli's Exclusion Principle & Hund's Rule |
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Match species are given in Column I with the electronic configuration given in Column II.

Column I

Column II

A. Cr

1. [Ar]3d84s0

B. Fe2+

2. [Ar]3d104s1

C. Ni2+

3. [Ar]3d64s0

D. Cu

4. [Ar]3d54s1

5. [Ar]3d64s2

Codes

          A         B          C           D

1.       4          3           1           2

2.       1          2           3           5

3.       5          4           3           2

4.       4          5           3           2

Subtopic:  Pauli's Exclusion Principle & Hund's Rule |
To view explanation, please take trial in the course below.
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