Chemistry, asked by atharvpatil2010, 15 days ago

in which block helium belongs to??​

Answers

Answered by beautybaral36
0

Answer:

Fact box

Group 18 Unknown

Block s 0.000164

Atomic number 2 4.003

State at 20°C Gas 4He

Electron configuration 1s2 7440-59-7

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