NEET UG PHYSICS MCQ: NUCLEI

1 Easy

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Application +4 | -1

A radioactive substance

{ }_{84}^{218} {X}

undergoes following decay:

{ }_{84}^{218} {X} \stackrel{\alpha \text {-Decay }}{\longrightarrow} {A} \stackrel{\beta^{-} \text {-Decay }}{\longrightarrow} {B} \stackrel{\alpha \text {-Decay }}{\longrightarrow} {C} \stackrel{\beta^{+}-\text {Decay }}{\longrightarrow} {D} \stackrel{\gamma \text {-Decay }}{\longrightarrow} {Y}

Then product

{Y}

is :

View answer and explanation

Correct option: B

{ }_{80}^{210} {Y}

Option B (

{ }_{80}^{210} {Y}

) is correct because after the series of decays, the atomic number decreases by 4 (2 from each alpha decay, +1 from beta-minus, -1 from beta-plus), and the mass number decreases by 8 (4 from each alpha decay).

NEET UG PHYSICS MCQ: NUCLEI

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