Embibe Experts Solutions for Chapter: Classification of Elements and Periodicity in Properties, Exercise 4: Exercise-4

Atom with the largest electron affinity is

Which of the following sequence of elements is arranged in the order of increasing atomic radii?

For the atoms $\mathrm{Li}, \mathrm{Be}, \mathrm{B}$ and $\mathrm{Na},$ the correct order of increasing atomic radius is:

The correct order of increasing first ionization energy is

The group that has the species correctly listed in the order of decreasing radius is :

The number of valence electrons in an atom with the configuration $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^2$ is:

The outer most electronic configuration of the most electronegative element is:

The first four ionisation energy values of metal are $191, 587, 872$ and $5962 \mathrm{kcal}/\mathrm{mol}$ respectively. The number of valence electrons in the element is: