Question

Give two examples of elements of Groups 1, 2, 16 and 17.

Answer 1

Answer:

The examples of elements are:

Group 1- Sodium (Na)  

Potassium (K)

Group 2- Beryllium (Be)

Magnesium (Mg)

Group 16- Oxygen (O)  

Sulphur (S)

Group 17- Fluorine (F)  

Chlorine (Cl)

Answer 2

Periodic Table

Explanation:

Groups are arranged horizontally on the periodic table and periods are arranged vertically. So every column is named as a group in the ascending order. And every row is named a period and period name ascends as you move from top to bottom of the periodic table.

The examples of elements are:

Group 1 - Lithium (Li), Caesium (Cs)  

Group 2 - Barium (Ba), Calcium (Ca)

Group 16 - Selenium (Se), Tellurium (Te)  

Group 17- Bromine (Br), Iodine (I)