(a)
Interpretation:
The ground state configuration of sodium atom has to be predicted.
Concept introduction:
Electronic configuration: The electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals.
Electrons occupy the lowest energy orbitals. The increasing order of orbital energy is
The energy order of the orbital for the first three periods is as follows,
The orbital which is closer to the nucleus has lower energy; therefore the
In general, the orbitals can hold maximum of two electrons, the two electrons must have opposite spin.
The subshell ordering by Aufbau principle is given below,
(a)
Explanation of Solution
The electronic configuration is depends on the electrons in the atom. The sodium atom has
The subshell ordering by Aufbau principle is given below;
Therefore ground state electronic configuration of sodium atom is
Sodium belongs to Period
The electronic configuration also can be written as follows,
(b)
Interpretation:
The ground state configuration of silicon atom has to be predicted.
Concept introduction:
Refer to part (a).
(b)
Explanation of Solution
The electronic configuration is depends on the electrons in the atom. The silicon atom has
The subshell ordering by Aufbau principle is given below;
Therefore ground state electronic configuration of silicon atom is
Silicon belongs to Period
The electronic configuration also can be written as follows,
(c)
Interpretation:
The ground state configuration of chlorine atom has to be predicted.
Concept introduction:
Refer to part (a).
(c)
Explanation of Solution
The electronic configuration is depends on the electrons in the atom. The chlorine atom has
The subshell ordering by Aufbau principle is given below;
Therefore ground state electronic configuration of chlorine atom is
Chlorine belongs to Period
The electronic configuration also can be written as follows,
(d)
Interpretation:
The ground state configuration of rubidium atom has to be predicted.
Concept introduction:
Refer to part (a).
(d)
Explanation of Solution
The electronic configuration is depends on the electrons in the atom. The rubidium atom has
The subshell ordering by Aufbau principle is given below;
Therefore ground state electronic configuration of rubidium atom is
Rubidium belongs to Period
The electronic configuration also can be written as follows,
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Chapter 1 Solutions
EBK CHEMICAL PRINCIPLES
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