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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



Question ID - 101520 | SaraNextGen Top Answer

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

1 Answer
127 votes
Answer Key / Explanation : (b) -

(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

127 votes


127