If uranium (mass number 238 and atomic number 92) emits an -particle, the product has mass number and atomic number |
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a) |
236 and 92 |
b) |
234 and 90 |
c) |
238 and 90 |
d) |
236 and 90 |
If uranium (mass number 238 and atomic number 92) emits an -particle, the product has mass number and atomic number |
|||||||
a) |
236 and 92 |
b) |
234 and 90 |
c) |
238 and 90 |
d) |
236 and 90 |
(b) Emission of an -particle means mass is decreased by 4 units and charge by 2 units. Thus, Thus, the mass number = 234 Atomic number = 90 |