abenezerh994 abenezerh994

04-06-2021
Chemistry

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an atom has 19 protons and 20 neutrons. what is the atomic number with steps

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farhan36511 farhan36511

04-06-2021

Answer:

39

Explanation:

add em up

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abuhuryrah1234 abuhuryrah1234

04-06-2021

Answer:

It's 39 I hope it is correct answer

Explanation:

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