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07-01-2016
Biology

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An isotope is an atom of an element that varies in mass number due to variation in the number of:
A. atoms.
B. protons.
C. neutrons.
D. electrons.

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nemo123 nemo123

07-01-2016

C. neutrons///Number of protons determines element, and number of electrons is always same as number of protons in atoms (no charge).

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