Question

write the chemical formula for the following compounds silver nitrate,magnesium oxide and barium chloride

Answer 1

• Silver Nitrate - AgNO₃
• Magnesium Oxide - MgO
• Barium Chloride - BaCl₂

➶ Remember:

Rules to follow while writing a chemical formula:

⚘ The valances or charges on the ion must balance.

⚘ When a compound consists of a metal and a non metal, the name or symbol of the metal is written first.

⚘ In compounds formed with polyatomic ions, the number of ions present in the compound is written by enclosing the formula of ion in a bracket and writing the number is ions outside the bracket.

NCERT Class 9 Chapter 3

Thanks.