Embibe Experts Solutions for Chapter: Classification of Elements and Periodicity in Properties, Exercise 1: Exercise 1

"Solubility of alkali metal hydroxide increases down the group."

Select only the correct explanation for the given statement.

Which is/are the correct order/s of atomic radius?

Which of the following sequences contain atomic numbers of only representative elements?

Select the equations having endothermic step:

Which of the following shows amphoteric behaviour?

Select the correct statement(s):

Where $\mathrm{a}, \mathrm{b}, \mathrm{c}, \mathrm{d}, \mathrm{e}, \mathrm{f}, \mathrm{g}, \mathrm{h}$ are $3^{\mathrm{rd}}$ period elements. If the difference between the atomic numbers of elements $\mathrm{b}$ and $\mathrm{e}$ is $\mathrm{x}$ and the difference between the atomic number of elements $\mathrm{c}$ and $\mathrm{f}$ is $\mathrm{y}.$ What is the value of $\mathrm{x}-\mathrm{y}.$