Choose the element having the duplet arrangement of electrons from the following elements- Chlorine, Helium, Phosphorus, Magnesium, Cesium.

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Solution

Duplet arrangement of electrons- It implies an atom has 2 valence electrons in its outermost shell.
Atomic number of Helium is 2. Thus, its electronic configuration is 1s².
Hence, Helium is the element having the duplet arrangement of electrons.

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Choose the element having the duplet arrangement of electrons from the following elements- Chlorine, Helium, Phosphorus, Magnesium, Cesium.

Duplet arrangement of electrons- It implies an atom has 2 valence electrons in its outermost shell.Atomic number of Helium is 2. Thus, its electronic configuration is 1s2.Hence, Helium is the element having the duplet arrangement of electrons.

Duplet arrangement of electrons- It implies an atom has 2 valence electrons in its outermost shell.
Atomic number of Helium is 2. Thus, its electronic configuration is 1s².
Hence, Helium is the element having the duplet arrangement of electrons.