Question

what type of bond exists between 2H2O , HF , NH3 , C2H5OH molecule ?

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Answer 1

H2O2-  covalent bond
HF - ionic bond 
NH3 - polar covalent bond
C2H5OH - polar covalent bond between Hand C whereas non polar covalent bond between Hand O and between C and O.

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Answer 2

Answer:

Type of bonds-

HF→ Polar covaleny bond as the bonding e

−

pair shifted more towards F due to its high electronegativity.

NH

3

→ Covalent bond, as both N and H are non-metal and does not have tendency to donate e

−

to each other, thus they share e

−

and form covalent bond.

C2H5

OH→ Two types of bonding.

(a) bonding between C−H is non- polar covalent bond as their electronegativity are almost similar.

(b) bonding between C−O and O−H it is polar covalent bond due to the high electronegativity of O, polarity arises.