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Which of the following compounds shows maximum hydrogen bonding?
Greater the electro negativity and smaller the size of the atom, stronger is the H-bond
Hydrogen bond between two atoms is formed due to
Hydrogen bonding occurs when H atom is linked to an electronegative atom like F, O or N. It is the force of attraction between small positive charge developed on H atom and small negative charge developed on electronegative atom due to displacement of electrons towards more electronegative atom.
Which of the following statements is true about hydrogen bonding?
For hydrogen bonding, the size of the atom should be small.
Which of the following has strongest bond?
Due to largest difference in electronegativity, H—F bond is strongest.
Which of the following observations can be explained on the basis of hydrogen bonding?
(i) H—F has higher boiling point than other halogen acids.
(ii) H2O has highest boiling point among hydrides of group 16 elements.
(iii) NH3 has lower boiling point than PH3.
Statement (iii) is not true since NH3 has higher boiling point than PH3 due to hydrogen bonding.
Paramagnetism is shown by the molecules which have
Presence of unpaired electrons makes a
molecule paramagnetic. More the number of unpaired electrons, higher is the paramagnetism.
Though covalent in nature, methanol is soluble in water, why?
In methanol, R is —CH3 group.
Hydrogen bonding between methanol and water.
The ice floats on water because
Density of ice is less than water due to an open cage structure formed by hydrogen bonding.
Which of the following molecules shows intramolecular hydrogen bonding?
Which of the following statements is not true?
Intramolecular hydrogen bonds are formed within the same molecule.