Manipur Board Solutions for Chapter: Periodic Classification of Elements, Exercise 3: Activity 1.1.

Find out the elements present in the Group$2$ of the periodic table.

Write down the electronic configuration of the first four elements of the group$2$.

What similarity do you find in the electronic configuration of group$2$ elements of the periodic table?

How many valence electrons are present in the first four elements in the group $2$ elements of the periodic table?

Find out the element present in the Group $17$ of the periodic table.

Write down the electronic configuration of the first four elements of the group$17$.

What similarities do you find in the electronic configuration of the first four elements of the Group$17$?

How many valence electrons are present in the first four elements of the Group $17$of the periodic table?