Question

an element x has electronic configuration 2,8,1.Which group and which period of the modern periodic table​

Answer 1

Explanation:

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Answer 2

Answer:

Group- I

Period- 3

Explanation:

From the electronic configuration, it can be understood that the element is Na (Sodium).The valence electron, here 1, determines its group no. and the no. of orbits, here 3, determines its period.

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