mb2790523 mb2790523

20-10-2021
Chemistry

contestada

20

. If the number of neutrons in the nucleus of the atom is 30, and the atomic number is 40, what is the mass number of that atom?

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aryabhupala aryabhupala

20-10-2021

Answer:

70

Explanation:

The atomic number stands for the number of protons.

mass number stands for number of neutrons and protons.

30 neutrons + 40 protons = mass number of 70

Hope this helps!

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