1to50valenci for the rule of bore bari
Answers
Answer:
Bohr Bury rule
Electrons revolve around the nucleus in different energy levels or shells and each shell is associated with definite energy. The energy of the K shell is the least while those of L, M, N and O shells increases progressively. We also know that any system that has least energy is the most stable.
1st energy level is K shell
2nd energy level is L shell
3rd energy level is M shell
4th energy level is N shell and so on.
Explanation:
ElementSymbolAtomic numberElectronic configuration (or Electron arrangement) KLMN
HydrogenH11
HeliumHe22
LithiumLi32
,1BerylliumBe42,2
BoronB52,3
CarbonC62,4
NitrogenN72,5
OxygenO82,6
FluorineF92,7
NeonNe102,8
SodiumNa112,8,1
MagnesiumMg122,8,2
AluminiumAl132,8,3
SiliconSi142,8,4
PhosphorusP152,8,5
SulphurS162,8,6
ChlorineCl172,8,7
ArgonAr182,8,8
PotassiumK192,8,8,1
CalciumCa202,8,8,2