Physics

A nucleus $_{11}^{24}\text{Na}$ is β-radioactive.
(a) What are the numbers 24 and 11 called?
(b) Write the equation representing β-decay.
(c) What general name is given to the product nucleus with respect to $_{11}^{24}\text{Na}$ .

Radioactivity

43 Likes

Answer

(a) The number 24 is called the mass number and the number 11 is called the atomic number.

(b) The equation representing β-decay is as follows —

$_{11}^{24}\text{Na} \longrightarrow \space _{12}^{24}\text{Mg} + _{-1}^{\space \space\space 0}\text{e}$

(c) The product nucleus is called the isobar because they have same mass number and different atomic number.

Answered By

21 Likes

Related Questions

(a) An atomic nucleus A is composed of 84 protons and 128 neutrons. The nucleus A emits an α-particle and is transformed into a nucleus B. What is the composition of B?
(b) The nucleus B emits a β-particle and is transformed into a nucleus C. What is the composition of C?
(c) What is the mass number of the nucleus A?
(d) Does the composition of nucleus C change if it emits the γ radiation?
View Answer