Class 12 Chemistry Nuclear Chemistry Radioactivity and a,b and g rays

Medium

What happens when an $\alpha$-particle is emitted?

AIPMT 1989 All AIPMT

A
Mass number decreases by $12$ units,atomic number decreases by $4$ units
B
Mass number decreases by $4$ units,atomic number decreases by $2$ units
C
Only mass number decreases
D
Only atomic number decreases

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Chemistry Questions

Chapter

Nuclear Chemistry

Subtopic

Radioactivity and a,b and g rays

Previous Year

AIPMT 1989 Paper All AIPMT years →

Similar Questions

The reaction $_5B^8 \to _4Be^8 + _1e^0$ is due to

Medium

$\beta$-particles are emitted from the atom

Medium

If a radioactive isotope with atomic number $A$ and mass number $M$ emits an $\alpha$-particle,the atomic number and mass number of that new isotope will become:

Medium

Which of the following isotopes of uranium is the most radioactive?

Medium

Describe the rays emitted by radioactive elements.

Difficult

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.