an atom of an element x has 2 electrons in its N shell is ot metal or non metal
state its electronic configuration state the number of proton in x
Answers
Answered by
6
Answer:
X is Helium. Helium is a nonmetal. Helium have no proton
Explanation:
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Answered by
5
Answer:
Electronic configuration:- 2,8,8,2
no of protons :- 20
Explanation:
Bohr-Bury scheme :- 2n²
In K shell = 2× 1²
= 2
In L shell = 2 × 2²
= 8
In M shell = 2 × 3²
= 18
In N shell = 2 × 4 ²
= 32
But due to octet configuration rules a electrically netral atom ( p⁺ = e⁻ ) outermost shell can have 8 electrons
So ,electronic configuration = 2,8,8,2
No. of protons = 20
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