August 2019 NY Regents Chemistry Exam
2 In all atoms of bismuth, the number of electrons must equal the
(1) number of protons
(2) number of neutrons
(3) sum of the number of neutrons and protons
(4) difference between the number of neutrons and protons
Solution: In a neutral atom of any element, the number of electrons must be equal to the number of protons.
Answer:1
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