Question

Consider the following nuclear reactions:
1. ${}_7^{14}N{+}_2^{4}He⟶$ ${}_8^{17}O{+}_1^{1}H$
2. ${}_4^{9}Be{+}_1^{1}H⟶$ ${}_3^{9}Li{+}_2^{4}He$
3. ${}_{12}^{24}Mg{+}_2^{4}He⟶$ ${}_{14}^{27}Si{+}_0^{1}n$
4. ${}_5^{10}B{+}_2^{4}He⟶$ ${}_7^{13}N{+}_0^{1}n$
Examples of induced radioactivity would include the reactions:

• A. 3 and 4
• B. 1 and 2
• C. 1, 3 and 4
• D. 1, 2, 3 and 4

Answer 1

The correct option is D 1, 2, 3 and 4

${}_{13}^{27}Al+3_0^{1}n{\to }_{15}^{30}P+2_{-1}^{0}B$

${}_{13}^{27}Al+3_0^{1}n{\to }_{14}^{30}si{+}_{-1}^{0}B$

${}_{13}^{27}Al{+}_0^{1}n{\to }_{12}^{24}Mg{+}_2^{4}He{+}_{-1}^{0}B$

${}_{13}^{27}Al+2_0^{1}n{\to }_{56}^{137}Ba+g_{+1}^{0}B$

${}_{11}^{23}Na+3_1^{3}H{\to }_{15}^{30}P{+}_{-1}^{0}B+2_0^{1}n$

${}_{11}^{23}Na+3_1^{3}H{\to }_{14}^{30}Si+2_0^{1}n$

${}_{11}^{23}Na{+}_1^{3}H{\to }_{12}^{24}Mg+2_0^{1}n$

$5_{11}^{23}Na+5_1^{3}H{\to }_{56}^{137}Ba+5_{-1}^{0}B{+}_0^{1}n$

Ans Lowest energy for ${}_{56}^{137}Ba,$ So D is correct option