Question

An element with which of the following electron configuration is NOT chemically reactive? *

2 points

1s 2 2s 2 2p 4

1s 2 2s 2 2p 6 3s 2 3p 5

1s 2 2s 2 2p 6 3s 2 3p 6

1s 2 2s 2 2p 6 3s 2 3p 6 4s 1

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Answer 1

$\huge\sf\underline\green{Required answer:-}$

1s² 2s² 2p⁶ 3s² 3p⁶ is the correct answer

$\huge\sf\underline\purple{Explanation:-}$

The 1s² 2s² 2p⁶ 3s² 3p⁶ This electronic configuration is the element of Argon

Argon is a 8A group element which is inert gases group and it have Stable electronic configuration. So it is not chemically reactive

Hence,All 8A group elemnts are not chemaically reactive

So finally ,

Required answer is option-c

Answer 2

Answer:

1s2 2s2 2p6 3s2 3p6

Explanation:

because the electronic configuration belongs to argon (Ar) .

since argon belongs to 8th a group. since these group elements are chemically reactive