June 2018 NY Regents Chemistry Exam
33 The table below shows the number of protons, neutrons, and electrons in four ions.
Which ion has a charge of 2-?
(1) A (2) E
(3) G
(4) J
Solution: An electron has a charge of -1. A proton has a charge of +1. A neutron has a charge go 0. To have a 2- charge an ion must have two more electrons than protons.
Answer: 1
Prepare for the Chemistry Regents Exam: HERE
Contact us for chemistry tutoring: HERE