Chemistry, asked by sara31442, 10 months ago

20 elements of periodic table and their atomic number and atomic mass number

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Answered by biniyasasi1981

3

Answer:

These are I known....

Hope that you can use it.........

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Answered by amansg712

3

Answer:

have a nice day hope it's helpful

plz brainlest answer when u brainlest i will follow u

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