Test Yourself 1 :Chemical Formula for Elements

What is chemical formula for Magnesium......

• Mg

• Mg₂

• Mn

• Mn₂

What is chemical formula for nitrogen?

• N

• N₂

• Ne₂

• Ne

What is chemical formula for helium

• H₂

• H

• He₂

• He

What is chemical formula for all elements in Group Vll

• F₂, Cl₂ , Br₂ ,I₂  ,At₂

• F, Cl , Br ,I  ,At

• F₃, Cl₃ , Br₃,I₃  ,At₃

What is the chemical formula for dinitrogen oxide

• N₂O₂

• NO

• NO₂

• N₂O