Science, asked by nagarjunagarju97, 9 months ago

what is an atomoic number of 20 elements

Answers

Answered by sartajkahlon

0

Answer:

17 Chlorine Cl

18 Argon Ar

19 Potassium K

20 Calcium Ca

Answered by Anonymous

1

Answer:

Hola

Explanation:

The number of protons in the nucleus is called as atomic number .....

Calcium .......

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