Atomic Number(Z), Mass number(A), Isotopes and Isobars - Practice Questions & MCQ

Which of the following atoms/ions contains 9 protons and 9 electrons

Which of the following atom/ion contains 23 Nucleons (protons and neutrons)

Which of the following is a pair of Isobars?

Which of the following pair is of isobars

Which of the following sets contain isotopes?

Identify the pairs which are not of isotopes
(i) ${ }_6^{12} \mathrm{X},{ }_6^{13} \mathrm{Y}$
(ii) ${ }_{17}^{35} \mathrm{X},{ }_{17}^{37} \mathrm{Y}$
(iii) ${ }^{14} \mathrm{X},{ }_7^{14} \mathrm{Y}$
(iv) ${ }_4^8 \mathrm{X},{ }_5^8 \mathrm{Y}$

Isobars are the atoms

CO is isoelectronic with

The ration of charge and mass would be greater for 

A nucleous X captures a$\beta$ particle and then emits a neutron and $\gamma$ ray to form Y. X and Y are:

(A) Isomorphs

(B) Isotopes

(C) Isobars

(D) Isotones