Maharashtra Board Solutions for Chapter: Periodic Classification of Elements, Exercise 14: Exercise

Choose the correct option and rewrite the statement.

The molecular formula of the chloride of an element $\mathrm{X}$ is $\mathrm{XCl}$. This compound is a solid having a high melting point. Which of the following elements be present in the same group as $\mathrm{X}$.

(i) $\mathrm{Na}$ (ii) $\mathrm{Mg}$  (iii) $\mathrm{Al}$ (iv) $\mathrm{Si}$

Choose the correct option and rewrite the statement.

In which block of the modern periodic table are the nonmetals found?

(i) $\mathrm{s}$-block   (ii) $\mathrm{p}$-block   (iii) $\mathrm{d}$-block   (iv) $\mathrm{f}$-bock

An element has its electron configuration as $2,8,2$. Now answer the following question.

With which of the following elements would this element resemble?

Write the name and symbol of the element having the smallest size.

Write the name and symbol of the atom having the smallest atomic mass.

Write the name and symbol of the most electronegative atom. (Use bracket while writing symbol of the element)

Write the name of the noble gas with the smallest atomic radius.

Write the name and symbol of the most reactive nonmetal.