(i) Represent the change in the nucleus of a radioactive element when $β$ particle is emitted.
(ii) What is the name given to elements with same mass number and different atomic number?
(iii) Under which conditions does the nucleus of an atom tend to be radioactive?

Open in App

Solution

(i) $_{Z}^{A} X \to_{z + 1}^{A} Y +_{- 1}^{0} β$
(ii) Isobars are the elements with same mass number and different atomic number.
(iii) Isotopes of all elements of atomic number higher than 82 and elements having number of neutrons exceeding the number of protons in their nuclei are tend to be radioactive.

Suggest Corrections

Similar questions

Q. When does the nucleus of an atom tend to be radioactive?

Consider a radioactive element with the nucleus 'X' having the atomic number A and the mass number Z. It emits an α particle. The change thus happens from the parent nucleus X to the daughter nucleus Y can be expressed as:

$_{Z}^{A} X Parent nucleus \to_{Z - 4}^{A - 2} Y Daughter nucleus +_{2}^{4} H e (α - particle)$

Q. What kind of change takes place in a nucleus when a

β

-particle is emitted ? Express it by an equation. State whether (a) atomic number and (b) mass number are conserved in a radioactive

β

-decay ?

Q. In a radioactive decay, an element

_{Z} X^{A}

emits four

α

-particles, three

β

-particles and eight gamma photons. The atomic number and mass number of the resulting final nucleus are

Q. A radioactive element

Y

emits an alpha particle and a beta particle successively and changes into an element

_{82} X^{206}

. Find the atomic mass and atomic number of radioactive element

Y

Join BYJU'S Learning Program

(i) Represent the change in the nucleus of a radioactive element when β particle is emitted.(ii) What is the name given to elements with same mass number and different atomic number? (iii) Under which conditions does the nucleus of an atom tend to be radioactive?

(i) AZX→Az+1Y+0−1β(ii) Isobars are the elements with same mass number and different atomic number.(iii) Isotopes of all elements of atomic number higher than 82 and elements having number of neutrons exceeding the number of protons in their nuclei are tend to be radioactive.

(i) Represent the change in the nucleus of a radioactive element when $β$ particle is emitted.
(ii) What is the name given to elements with same mass number and different atomic number?
(iii) Under which conditions does the nucleus of an atom tend to be radioactive?