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The s-Block Elements
Name a few important uses of quick lime.
It is used:
(i) in the preparation of cement, glass and calcium carbide.
(ii) in the purification of sugar
(iii) in drying alcohol and non-acidic gases like ammonia etc.,
(iv) in softening of hard water.
(v) as a flux in the extraction of metals.
(vi) in agriculture as a fertiliser, disinfectant and germicide.
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The softness of group 1 elements increases down the group with increasing atomic number. Give reason.
Which is the most reactive alkali metal and why?
Why alkali metals do not form M2+ ions?
Name the radio active element in group 1. How does it resemble with the remaining elements of the group?
Why alkali metals are normally kept in kerosene oil?
Why lithium cannot be stored in kerosene?
Why does lithium form complexes?
Why are alkali metal ions diamagnetic and colourless?
Why are alkali metals the most electropositive in nature?
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