Chemistry, asked by csahithya39, 1 month ago

mass number of first 20 elements....

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Answered by as7803617

1

Answer:

Atomic Number of Elements from 1 to 30

Atomic Number Element Atomic Mass

18 Argon 39.948

19 Potassium 39.098

20 Calcium 40.078

21 Scandium 44.956

Answered by kaushik19012008

1

Answer:

see ee

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