3 years ago

An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?

1 answer:

8 0

Atomic mass is found by adding the number of protons and neutrons together. The atomic number tells you how many protons an element has.
So since this element has 10 protons and an atomic mass of 20, there are 10 neutrons in this element.

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