Chemical compounds

Valency of nobel gases are

• Monovalent

• Divalent

• Zero

• Trivalent

What is the valency

Ag is

• Monovalent

• Divalent

• Trivalent

Copper is an metallic element that has more than valency , they are …….

• Monovalent and Divalent

• Monvalent and triplevalent

• Divalent and trivalent

Carbon is ….

• Monvalent nonmetalic

• Tetravalent metalic

• Tetravalent nonmetalic

What is the valency of nitrogen …..

• Divalent , trivalent

• Trivalent , pentavalent

• Monovalent , pentavalent

What is the number of elements of H2o…

• Two

• Three

• One

How many atoms in Al2 O3 ….

• Three

• Five

• Two

Wha is the the formula of hydroxide…….

• OH

• Hco3

• Co3

What is the formula of Nitrate ….

• No2

• No3

• NH4