S P Singh Solutions for Chapter: Periodic Table, Periodic Properties and Variations of Properties, Exercise 1: Intext Questions

The electronic configuration of an element $\mathrm{T}$ is $2, 8, 8, 1$. What is the period number of $\mathrm{T}$?

The electronic configuration of an element $\mathrm{T}$ is $2, 8, 8, 1$. How many valence electrons are there in an atom of $\mathrm{T}$? 

The electronic configuration of an element $\mathrm{T}$ is $2, 8, 8, 1$. What is the valency of $\mathrm{T}$?

Match the atomic number $19$ with one of the following:

Match the atomic number $15$ with one of the following:

Match the atomic number $8$ with one of the following:

Match the atomic number $4$ with one of the following:

Match the atomic number $2$ with one of the following: