Question

Write valence shell electronic configuration of the following groups :

a) Noble gases b ) Halogens c) Alkali metals
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Answer 1

a) ns²np⁶ b)ns²np⁵ c)ns¹ hope this will help you

Answer 2

1. Given above

2. $\color{greenyellow}\implies \bf {ns {}^{2} }$$\color{greenyellow}\implies \bf {np {}^{6} }$

3.$\color{greenyellow}\implies \bf {ns {}^{1} }$