Chemistry, 29.10.2020 01:00 happy121906
In which of the following sets is the symbol of the element, the number of protons, and the number of electrons given correctly?
a. In, 49 protons, 49 electrons
b. Zn, 30 protons, 60 electrons
c. F, 19 protons, 19 electrons
d. Cs, 55 protons, 132.9 electrons
Answers: 3
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