Question

Q.4 Name along with symbols and atomic number:

1. Elements in group 1

2. Elements in group 18

3. Elements in Halogen group​

Answer 1

group 1

Atomic Number Chemical Symbol Element Name Group Period

1 H Hydrogen 1 1

3 Li Lithium 1 2

11 Na Sodium 1 3

19 K Potassium 1 4

37 Rb Rubidium 1 5

55 Cs Caesium 1 6

87 Fr Francium 1 7

group 18

Atomic Number Chemical Symbol Element Name Group Period

2 He Helium 18 1

10 Ne Neon 18 2

18 Ar Argon 18 3

36 Kr Krypton 18 4

54 Xe Xenon 18 5

86 Rn Radon 18 6

118 Og Oganesson 18 7

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