Chemistry, asked by manjushikhar, 8 months ago

Helium and Chlorine have atomic numbers 2 and 17 respectively.Their valencies will be respectively.​

Answers

Answered by mpdeepak1988
1

Answer:

zero and one

Explanation:

Helium has completely filled S orbital in 1s2 configuration and chlorine has ( Ne) 3s23p5

Answered by golludevudunaidu1973
1

Explanation:

the valancy of helium is 0 because it is 8th group element and it has duplet confrigation

the valancy of chlorine is 1 because it is seventh group element and it is electro negativity element

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