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Bohr's Model of a Hydrogen Atom

In the radioa...

Question

In the radioactive change,
$_{Z}^{A} P ⟶$ $_{Z + 1}^{A} Q ⟶$ $_{Z - 1}^{A - 4} R ⟶$ $_{Z - 1}^{A - 4} S$
the radiations emitted in sequence are:

A

α, β, γ

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B

β, α, γ

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C

γ, α, β

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D

β, γ, α

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Solution

The correct option is B $β, α, γ$
$α$ -decay
$_{Z}^{A} X - α - - \to_{Z - 2}^{A - 4} Y$
$β$ -decay
$_{Z}^{A} X - β - \to_{Z + 1}^{A} Y$
$γ$ -decay
$_{Z}^{A} X - γ - \to_{Z}^{A} X$
$∴$ $_{Z}^{A} P - β - - \to_{Z + 1}^{A} Q - α - - \to_{Z - 1}^{A - 4} R - γ - - \to_{Z - 1}^{A - 4} S$
Correct sequence : $β, α, γ$

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