Question

what common feature in electronic configuration is seen in argon and neon?

Answer 1

Answer:

Answer. (i) The atoms of the elements at the end of period 2 and Period 3 contains 8 electrons in their outermost shell. (ii) Non-metallic.

Explanation:

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Answer 2

Answer :- For Neon :- He]2s²2p There are 8 valence electrons in this element and hence, has fully filled electronic configuration and is a stable element. For Argon: There are 8 valence electrons in this element and hence, has fully filled electronic configuration and is a stable element.

The Argon electron configuration will be 1s22s22p63s23p6. Because the third energy level has eight electrons and is therefore full (3s23p6) it is called a noble gas.