valency quiz

Which of the following has valency 3?

• nitrate

• sulphate

• phosphate

• thiosulphate

An element has 5 valence electron , what is its valency?

• 4

• 3

• 2

• 1

An atom has four shells and 19 protons in its atom , what is its valency?

• 1

• 2

• 3

• 4

what is valency of the given element?

• 1

• 2

• 3

• 4

Which of following has valency 2?

• 
• 
• 
• 

In H3PO3, what is valency of PO3?

• 4

• 3

• 2

• 1

In H2CO3 valency of CO3 is 2.

• correct

• incorrect

• unknown

• partially correct

Valency of bicarbonate is................

An element having valency 3 may have valence electron...... or.......

Define valency.