Identify the correct combination from the following:
Column I
Column II
A
Hydrogen
Hydrogen bonding
B
Hydrogen iodide
Dipole-dipole forces
C
Ammonia
Hydrogen bonding
D
Mercury
Vander waals forces
E
Magnesium oxide
Dipole-dipole forces
A
B & C
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B
A, B & C
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C
A & D
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D
A, D & E
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Solution
The correct option is C B & C Hydrogen bond is the attractive force between the hydrogen attached to an electronegative atom of one molecule and the electronegative atom of the other molecule,this electonegative atom is usually F,O or N.
Dipole dipole forces are the forces of attraction between the positive end of one polar molecule and the negative end of the another polar molecule.