Nuclear Chemistry - Result Question 10

####10. In the nuclear transmutation, ${ } _4^{9} Be+X \longrightarrow{ } _4^{8} Be+Y$ $X$ and $Y$ are

(2013 Adv.)

(a) $(\gamma, n)$

(b) $(p, D)$

(c) $(n, D)$

(d) $(\gamma, p)$

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Answer:

Correct Answer: 10. eight

Solution:

  1. PLAN ${ } _4^{9} Be+{ } _a^{b} X \longrightarrow{ } _4^{8} Be+{ } _c^{d} Y$

Atomic number same

$$ \begin{aligned} & 4+a=4+c \ & 9+b=8+d \end{aligned} $$

$$ \begin{aligned} & \begin{array}{ll} \text { If } X={ } _0^{0} \gamma & a=0 \ b=0 \end{array} \ & Y={ } _0^{1} n \quad c=0 \ & \begin{array}{ll} \text { If } X={ } _1^{1} p & a=1 \ b=1 \end{array} \ & Y={ } _1^{2} D \quad c=1 \ & { } _4^{9} Be+{ } _0^{0} \gamma \longrightarrow{ } _4^{8} Be+{ } _0^{1} n \ & { } _4^{9} Be+{ } _1^{1} p \longrightarrow{ } _4^{8} Be+{ } _1^{2} D \end{aligned} $$



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