
(a)
Interpretation:
Valence electronic configuration using previous noble gas of calcium with
Concept introduction:
Electronic configuration can be assigned to any elements in ground when they follow certain rules like Hund rule, Pauli Exclusion Principle and Aufbau rule. If
No two electrons in an atom can have same group of four quantum numbers and this is Pauli Exclusion Principle.
While filling of orbital’s, electron first enters to each energy level with degenerate energy before paring of electron begins and this is Hund’s rules.
(a)

Answer to Problem 43A
Valence electronic configuration using previous noble gas of calcium with
Explanation of Solution
As per Aufbau rule electrons are filled in lower energy orbitals that are closer to the nucleus before they are filled in higher energy ones. The order of orbital arranged in their increasing energies is as follows:
So complete electronic configuration of calcium with
Hence valence electronic configuration using previous noble gas of calcium with
(b)
Interpretation:
Valence electronic configuration using previous noble gas of francium with
Concept introduction:
Electronic configuration can be assigned to any elements in ground when they follow certain rules like Hund rule, Pauli Exclusion Principle and Aufbau rule. If atomic number of an element is
No two electrons in an atom can have same group of four quantum numbers and this is Pauli Exclusion Principle.
While filling of orbital’s, electron first enters to each energy level with degenerate energy before paring of electron begins and this is Hund’s rules.
(b)

Answer to Problem 43A
Valence electronic configuration using previous noble gas of francium with
Explanation of Solution
As per Aufbau rule electrons are filled in lower energy orbitals that are closer to the nucleus before they are filled in higher energy ones. The order of orbital arranged in their increasing energies is as follows:
So complete electronic configuration of francium with
Hence valence electronic configuration using previous noble gas of francium with
(c)
Interpretation:
Valence electronic configuration using previous noble gas of yttrium with
Concept introduction:
Electronic configuration can be assigned to any elements in ground when they follow certain rules like Hund rule, Pauli Exclusion Principle and Aufbau rule. If atomic number of an element is
No two electrons in an atom can have same group of four quantum numbers and this is Pauli Exclusion Principle.
While filling of orbital’s, electron first enters to each energy level with degenerate energy before paring of electron begins and this is Hund’s rules.
(c)

Answer to Problem 43A
Valence electronic configuration using previous noble gas of yttrium with
Explanation of Solution
As per Aufbau rule electrons are filled in lower energy orbitals that are closer to the nucleus before they are filled in higher energy ones. The order of orbital arranged in their increasing energies is as follows:
So complete electronic configuration of yttrium with
Hence valence electronic configuration using previous noble gas of yttrium with
(d)
Interpretation:
Valence electronic configuration using previous noble gas of cerium with
Concept introduction:
Electronic configuration can be assigned to any elements in ground when they follow certain rules like Hund rule, Pauli Exclusion Principle and Aufbau rule. If atomic number of an element is
No two electrons in an atom can have same group of four quantum numbers and this is Pauli Exclusion Principle.
While filling of orbital’s, electron first enters to each energy level with degenerate energy before paring of electron begins and this is Hund’s rules.
(d)

Answer to Problem 43A
Valence electronic configuration using previous noble gas of cerium with
Explanation of Solution
As per Aufbau rule electrons are filled in lower energy orbitals that are closer to the nucleus before they are filled in higher energy ones. The order of orbital arranged in their increasing energies is as follows:
So complete electronic configuration of zinc with cerium with
Hence valence electronic configuration using previous noble gas of cerium with
Chapter 11 Solutions
World of Chemistry
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