Heerka 2 ee curiye

Elements

Chemical element			Chemical series	Electron configuration
3	Li	Lithium	Alkali metal	[He] 2s1
4	Be	Beryllium	Alkaline earth metal	[He] 2s2
5	B	Boron	Metalloid	[He] 2s2 2p1
6	C	Carbon	Nonmetal	[He] 2s2 2p2
7	N	Nitrogen	Nonmetal	[He] 2s2 2p3
8	O	Oxygen	Nonmetal	[He] 2s2 2p4
9	F	Fluorine	Halogen	[He] 2s2 2p5
10	Ne	Neon	Noble gas	[He] 2s2 2p6

Lithium

Beryllium

Boron

Carbon

Nitrogen

Oxygen

Fluorine

Neon