Question

Please help me with this question

Answer 1

Remember that

• For being a bond covalent ∆E<1.8
• For being a bond ionic ∆E>1.8

#1

• ∆EN=0.5

Carbon is present so it's covalent

#2

• OH bond is also covalent

#3

• P-H will hardly form a bond

#4

• Ionic bond

#5

• Ionic bond