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A radioactive nucleus undergoes a series of decay according to the scheme
$A \overset{α}{⟶} A_{1} \overset{β^{-}}{⟶} A_{2} \overset{α}{⟶} A_{3} \overset{γ}{⟶} A_{4}$
If the mass number and atomic number of A are 180 and 72 respectively, what are these numbers for A₄?

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172,69

69,172

180,69

69,180

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detailed solution

Correct option is A

Mass number of A4=172 Atomic number of A4=69for A1 z=70 ,A=176 FOR A2 Z=71, A=176 FOR A3 Z=69 , A=172 A4 is also same

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A radioactive nucleus undergoes a series of decay according to the scheme A⟶αA1⟶β−A2⟶αA3⟶γA4 If the mass number and atomic number of A are 180 and 72 respectively, what are these numbers for A4?

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Ready to Test Your Skills?

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A radioactive nucleus undergoes a series of decay according to the scheme
$A \overset{α}{⟶} A_{1} \overset{β^{-}}{⟶} A_{2} \overset{α}{⟶} A_{3} \overset{γ}{⟶} A_{4}$
If the mass number and atomic number of A are 180 and 72 respectively, what are these numbers for A₄?