3 years ago

A certain atom contains 53 protons, 66 neutrons, and 51 electrons. What is the mass number of this atom?

Chemistry

1 answer:

xeze [42]3 years ago

3 0

Answer:

The mass number of an element is the sum of protons and neutrons.

Hence, 53+66 =119

The mass number of the atom is 119.

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