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Hydrogen
Explain why water has high melting and boiling points as compared to H2S.
It is due to the association of water molecules by intermolecular hydrogen bonding. When hydrogen is attached to an electronegative atom like oxygen, the oxygen pulls the electrons closer to itself giving it a partial negative charge and leaving hydrogens with a partial positive charge. The partial charges are attracted to each other, so the hydrogens of one water molecule are attracted to the oxygen of another. This extra bond allows the water to absorb more energy. H2S does not show this property.
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Why does hydrogen occur in a diatomic form rather than in a monoatomic form under normal conditions?
Give laboratory Preparation of Dihydrogen ?
Name the substances in which hydrogen exhibits 0 and -1 oxidation states.
Name one isotope of hydrogen which has no neutron.
Which isotope of hydrogen is used as a tracer in organic reactions ?
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