If uranium mass no-238 and atomic no-92 emits - particle- the product has mass number and atomic number

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Standard IX

Chemistry

Properties of Alpha, Beta and Gamma Radiations

If uranium ma...

Question

If uranium (mass no,238 and atomic no,92) emits $α$ particle, the product has mass number and atomic number

238, 90

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236, 90

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234, 90

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235, 92

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Solution

The correct option is C $234, 90$
When $_{92}^{238} U$ emits a $α$ -particle then the atomic number is decreased by two units and mass number is decreased by four-unit.

$_{92}^{238} U ⟶_{90}^{234} T h +_{2}^{4} H e$

Hence, the correct option is $C$

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If uranium (mass no,238 and atomic no,92) emits α particle, the product has mass number and atomic number

The correct option is C 234,90When 23892U emits a α-particle then the atomic number is decreased by two units and mass number is decreased by four-unit.23892U⟶23490Th+42HeHence, the correct option is C

If uranium (mass no,238 and atomic no,92) emits $α$ particle, the product has mass number and atomic number

The correct option is C $234, 90$
When $_{92}^{238} U$ emits a $α$ -particle then the atomic number is decreased by two units and mass number is decreased by four-unit.

$_{92}^{238} U ⟶_{90}^{234} T h +_{2}^{4} H e$

Hence, the correct option is $C$