Chemistrymedium · Past Paper
Calculate the number of neutrons in an isotope of Uranium-235 (At. No. 92).
A92
B143
C235
D327
✓ Correct Answer: B — 143
Neutrons = Mass Number - Atomic Number = 235 - 92 = 143.
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✓ Correct Answer: B — 143
Neutrons = Mass Number - Atomic Number = 235 - 92 = 143.
Share this question