Question

Isotopes have the same ____________ but have a new atomic mass because they _________________. *

Number of electrons; have more or less neutrons

Number of protons; have more or less neutrons

Number of protons; have more or less electrons

Number of electrons; have more or less protons

Answer 1

Isotopes have the same number of protons but have a new atomic mass because they have more or less neutrons.

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