Q
The total number of neutrons in dipositive zinc ion with mass number 70 is _______.
RRB Group D, 13-Dec-18 S-2
2018
✓ Answer:
B
40
The total number of neutrons in dipositive zinc ion with mass number 70. No. of neutrons = Mass number - Atomic number. Mass number of zinc = 70, Atomic number of zinc = 30. Thus, number of neutrons = 70 - 30 = 40.
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