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's electron configuration is 2, 1.

Beryllium's electron configuration is 2, 2.

Boron's electron configuration is 2, 3.

Carbon's electron configuration is 2, 4.

Nitrogen's electron configuration is 2, 5.

Oxygen's electron configuration is 2, 6.

Fluorine's electron configuration is 2, 7.

Neon's electron configuration is 2, 8.

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