Physics, 29.01.2021 23:00 edsimms21111

The two most common isotopes of tin have atomic masses of 118 and 120. How do atoms of these two isotopes differ?
A. One of them has two fewer electrons than the other.
B. The heavier isotope has two more protons than the lighter isotope.
C. The lighter isotope has two more neutrons than the heavier
isotope.
D. The heavier isotope has two more neutrons than the lighter
isotope.

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