Which ones of the following reactions are artificial radioactive decay?

_{92}^{238} U \to_{90}^{234} T h + α

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_{12}^{24} M g + β^{+} \to_{13}^{24} A l

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_{4}^{9} B e +_{2}^{4} H e \to_{6}^{12} C + n

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_{92}^{238} U \to_{90}^{234} T h + β

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Solution

The correct options are
B $_{12}^{24} M g + β^{+} \to_{13}^{24} A l$
C $_{4}^{9} B e +_{2}^{4} H e \to_{6}^{12} C + n$
$_{92}^{238} U \to_{90}^{234} T h + α$
In this reaction $_{92}^{238} U$ does $α$ decay and $_{90}^{234} T h$ is formed. It is natural decay.
$_{12}^{24} M g + β^{+} \to_{13}^{24} A l$
In this reaction nonradioactive Mg atom does $β^{+}$ and $_{13}^{24} A l$ is formed. It is artificial decay.
$_{4}^{9} B e +_{2}^{4} H e \to_{6}^{12} C + n$
In this reaction nonradioactive Be atom does $_{2}^{4} H e$ decay and $_{6}^{12} C$ is formed. It is also artificial decay.

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Similar questions

Q. (a)Calculate the energy released if

^{238} U

emits an

α

-particle.

(b) Calculate the energy supplied to

^{238} U

if two protons and two neutrons are to be emitted one by one. The atomic masses of

^{238} U

^{234} T h

and

^{4} H e

are

238.0508 u, 234.04363 u

and

4.00260 u

respectively.

Q. Which ones of the following reactions are artificial radioactive decay?

Match the following:

$\begin{matrix} C o l u m n I & C o l u m n I I 1. H e x a g o n a l & (i) a = b = c 2. C u b i c & (i i) a \neq b \neq c 3. T r i c l i n i c & (i i i) a = b \neq c 4. M o n o c l i n i c & (i v) α = β = γ = 90^{\circ} 5. T e t r a g o n a l & (v) α = γ = 90^{\circ}, β \neq 90^{\circ} 6. R h o m b o h e d r a l & (v i) α \neq β \neq γ \neq 90^{\circ} 7. O r t h o r h o m b i c & (v i i) . α = β = γ \neq 90^{\circ} (v i i i) α = β = 90^{\circ}, γ = 120^{\circ} \end{matrix}$