August 2018 NY Regents Chemistry Exam
31 What is the net charge of an ion that has 11 protons, 10 electrons, and 12 neutrons?
(1) 1+
(2) 2+
(3) 1-
(4) 2-
Solution: A proton has a charge of +1 and an electron has a charge of -1. Neutron has no charge. We have 11 protons and 10 electrons which is +11-10=+1
Answer: 1
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