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Which of the following would increase both the atomic number and mass number of an atom by one?

A.
Adding one more neuton.

B.
Adding one more proton and electron.

C.
Adding one more proton and neutron.

D.
Adding one more proton, one more neutron, and one more electron.

Respuesta :

Answer:

C. Adding one more proton and neutron.

Explanation:

The atomic number is the number of protons in the nucleus of an atom. Atomic mass is the number of protons and neutrons.

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