Question

Which+element+has+(a)two+sello+both+of+which+are+completely+filled+with+electrons

Answer 1

Answer:

Neon

Symbol : Ne

Atomic No. = 10

Explanation:

The element which has two shells both of which are completely filled with electrons is Neon with electronic configuration (2,8).  First shell (K shell) holds a maximum of 2 e⁻ and the second shell (M shell) holds a maximum of 8 e⁻

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