Priyanka B Solutions for Chapter: Structure of the Atom, Exercise 3: Multiple Choice Questions MCQs

$\mathrm{P}-32$ is used in the treatment of:

$\mathrm{Co}-60$ is used in the treatment of:

The pair of isobars is:

The number of electrons in an element X is 9 and number of neutrons 10. The correct representation of X is:

The electronic distribution of Mg (atomic number 12) is:

An element has 3 protons and 4 neutrons in its atom. Its valency is:

The ion of an element has $2$ positive charge. Mass number of the element is $24$ and number of neutrons is $12$. What is the number of electrons in the ion?

Atomic-number of sodium is 11. Electronic distribution of ${\mathrm{Na}}^{+}$ is: