June 2018 NY Regents Chemistry Exam
2 Which statement explains why a xenon atom is electrically neutral?
(1) The atom has fewer neutrons than electrons.
(2) The atom has more protons than electrons.
(3) The atom has the same number of neutrons and electrons.
(4) The atom has the same number of protons and electrons.
Solution: An electron has a charge of -1. A proton has a charge of +1. A neutron has a charge go 0. An atom is electrical neutral when there are equal number of protons and electrons.
Answer: 4
Prepare for the Chemistry Regents Exam: HERE
Contact us for chemistry tutoring: HERE