Chemistry, asked by thundergodd1233, 4 months ago

write the characteristics of the element having the atomic number 20​

Answers

Answered by soumyashree96
4

Atomic number 20 is of Calcium -Electronic configuration – 1s2 2s2 2p6 3s2 3p6 4s2.Group - It belongs to second group.Period – It belongs to 4th period.Valency – Valency of calcium is +2

Answered by rr1501840
4

Explanation:

20th element ic calcium

It's electronic configuration is 1s2 2s2 2p6 3s2 3p6 4s2

symbol is Cl

atomic weight is 40.078 u

hope it helps

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