
Concept explainers
(a)
Interpretation:
On the periodic table, the position of the given element has to be located.
(a)

Explanation of Solution
Given electronic configuration,
Electron filling concepts in orbitals:
- Electrons first occupy the orbitals with lower energy than the orbitals with higher energy (Aufbau principle).
- An orbital can be occupied only by two electrons having opposite spins (Pauli exclusion principle).
- Each electron fills each orbital till it is half filled, when they are degenerate orbital (Hund’s rule).
The order of electrons filling in a multi-electron atom is given as follows,
Figure 1
The order of orbitals in their increasing energy is given by
Calculate the total number of electrons in the given electronic configuration and identify the element
The position of the given element on the periodic table is given below:
Figure 2
(b)
Interpretation:
On the periodic table, the position of the given element has to be located.
(b)

Explanation of Solution
Given electronic configuration,
Electron filling concepts in orbitals:
- Electrons first occupy the orbitals with lower energy than the orbitals with higher energy (Aufbau principle).
- An orbital can be occupied only by two electrons having opposite spins (Pauli exclusion principle).
- Each electron fills each orbital till it is half filled, when they are degenerate orbital (Hund’s rule).
The order of electrons filling in a multi-electron atom is given as follows,
Figure 1
The order of orbitals in their increasing energy is given by
Calculate the total number of electrons in the given electronic configuration and identify the element
The position of the given element on the periodic table is given below:
Figure 3
(c)
Interpretation:
On the periodic table, the position of the given element has to be located.
(c)

Explanation of Solution
Given electronic configuration,
Electron filling concepts in orbitals:
- Electrons first occupy the orbitals with lower energy than the orbitals with higher energy (Aufbau principle).
- An orbital can be occupied only by two electrons having opposite spins (Pauli exclusion principle).
- Each electron fills each orbital till it is half filled, when they are degenerate orbital (Hund’s rule).
The order of electrons filling in a multielectron atom is given as follows,
Figure 1
The order of orbitals in their increasing energy is given by
Calculate the total number of electrons in the given electronic configuration and identify the element
The position of the given element on the periodic table is given below:
Figure 4
(d)
Interpretation:
On the periodic table, the position of the given element has to be located.
(d)

Explanation of Solution
Given electronic configuration,
Electron filling concepts in orbitals:
- Electrons first occupy the orbitals with lower energy than the orbitals with higher energy (Aufbau principle).
- An orbital can be occupied only by two electrons having opposite spins (Pauli exclusion principle).
- Each electron fills each orbital till it is half filled, when they are degenerate orbital (Hund’s rule).
The order of electrons filling in a multielectron atom is given as follows,
Figure 1
The order of orbitals in their increasing energy is given by
Calculate the total number of electrons in the given electronic configuration and identify the element
The position of the given element on the periodic table is given below:
Figure 5
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Chapter 20 Solutions
General Chemistry: Atoms First
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