Nuclear Chemistry - Result Question 11

####11. Decrease in atomic number is observed during

(1998, 2M)

(a) alpha emission

(b) beta emission

(c) positron emission

(d) electron capture

Show Answer

Answer:

Correct Answer: 11. isobars

Solution:

  1. In the following nuclear reactions, there occur decrease in atomic number $(Z)$

$$ \begin{aligned} { } _Z X^{A} & \longrightarrow{ } _2 He^{4}+{ } _{Z-2} Y^{A-4}, \alpha-\text { emission } \ { } _Z X^{A} & \longrightarrow{ } _{+1} e^{0}+{ } _{Z-1} Y^{A}, \text { positron emission } \ { } _Z X^{A}+{ } _{-1} e^{0} & \longrightarrow{ } _{Z-1} Y^{A} \text {, electron capture } \end{aligned} $$

In beta emission, increase in atomic number is observed.

$$ { } _Z X^{A} \longrightarrow{ } _{-1} e^{0}+{ } _{Z+1} Y^{A}, \beta \text {-emission } $$



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक