Question

write down the electronic configuration of the first three elements of group 1 what similarities do you find in the electronic configuration?​

Answer 1

Answer:

Element = Hydrogen

Atomic Number = 1

Symbol Electron = H

Electronic Configuration = 1

Valence Electron = 1

Valency = 1

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Element = Helium

Atomic Number = 2

Symbol Electron = He

Electronic Configuration = 2

Valence Electron = 2

Valency = 0

........................................................................................................................................

Element = Lithium

Atomic Number = 3

Electronic Configuration = (2,1)

Valence Electron = 1

Valency = 1

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Explanation:

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