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nlexa [21]
3 years ago
5

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

Chemistry
2 answers:
sergey [27]3 years ago
4 0

Answer:

39

Explanation:

add em up

NeX [460]3 years ago
4 0

Answer:

It's 39 I hope it is correct answer

Explanation:

HAVE A NICE DAY

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