Chemistry · S and p Block Elements
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Which of the following is the electronic configuration of an alkali earth metal of 3rd period:
- A
[Ne] 3s
- B
[Ne] 3s1
- C
[Ne] 3s2 3p
- D
[Ne] 3s 3px 3py
Option B, "[Ne] 3s¹," It correctly indicates that the alkali earth metal in question has one electron in the 3s orbital, which is characteristic of the electronic configuration of alkali earth metals in the 3rd period.
This configuration implies that there is only one electron in the 3s orbital, which is not characteristic of an alkali earth metal. Alkali earth metals have two valence electrons.
It correctly indicates that the alkali earth metal in question has one electron in the 3s orbital, which is characteristic of the electronic configuration of alkali earth metals in the 3rd period.
This configuration suggests that there are electrons in both the 3s and 3p orbitals, which is not consistent with the electronic configuration of an alkali earth metal.
This configuration implies that there are electrons in both the 3s, 3px, and 3py orbitals, which is not the electronic configuration of an alkali earth metal. Alkali earth metals have their valence electrons primarily in the 3s orbital.
Tagged under Chemistry · S and p Block Elements · 2023