June 2018 NY Regents Chemistry Exam
28 Which particle has the least mass?
(1) alpha particle
(2) beta particle
(3) neutron
(4) proton
Solution: Table O on the Reference Table lists nuclear particles and their symbols. The mass number is on the top left corner of each symbol. Alpha particle has a mass of 4. Beta particle has a mass of 0. Neutron has a mass of 1 and proton has a mass of 1.
Answer: 2
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