Embibe Experts Solutions for Chapter: Periodic Classification of Elements, Exercise 1: meghalaya-2018

What do you mean by ionization energy? What are the factors which determine the magnitude of ionization of energy?

An element X has an electronic configuration of  $2,8,8,2$ belongs to the period _____.

The atomic number of a few elements are $10, 27, 7, 14.$ Identify the elements.

Classification of elements helps us to

An element P belongs to the $4$th period and group $17$ of the long form of the periodic table.  How many valence electrons are there in element P? 

An element P belongs to the $4$th period and group $17$ of the long form of the periodic table. What is the valency of P?

An element P belongs to the $4$th period and group $17$ of the long form of the periodic table. Name the element.

An element P belongs to the $4$th period and group $17$ of the long form of the periodic table.  Write the formula of its compound, when it reacts with element Q having valency $3+$.