Question

which one of the following is the electronic configuration of noble gas?
1.2,8,7
2.2,8,1
3.2,8,18,8
4.2,8,2
EXPLANATION ALSO​

Answer 1

Answer:

3- 2,8,18,8

Explanation:

It is a noble element configuration because in its outer orbit , there are eight electrons . so it can take part in any chemical reaction . because it has octet in outer most sh

ell. so ih has not need to gain or lose the electrons .so it is noble element. and this element is krypton(kr)

Answer 2

3rd option is the correct one. it is only the configuration of noble gas.

becz the outermost shell containing 8 electrons unables the atom to react further and thus its become noble atom.

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