Question

an element has electronic configuration 2 , 8 , 1 belongs to ?​

Answer 1

Explanation:

IT'S non metal clorine I L U

Answer 2

Answer:

Atomic number of Sodium (Na) is 11, so electronic configuration will be 2,8,1 as you had choosen the Option "A". Sodium has one valence electron in valence shell so it belongs to the group 1 as Sodium has three shells. So it belongs to 3rd period. This discussion on An element has configuration 2, 8, 1

Explanation:

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