Long Answer Type
Short Answer TypeLong Answer TypeWhat happens when:
(i) Lithium reacts with air
(ii) Lithium reacts with water
(iii) Lithium reacts with halogen
(iv) Lithium reacts with acids?
Short Answer TypeAccount for the following:
(i) Lithium can not form monovalent cation (Li+) easily.
(ii) Lithium iodide is more covalent than lithium fluoride.
(i) The ionisation enthalpy of lithium is maximum in the group. Therefore, it can not form monovalent cation (Li+) so easily as compared to the other alkali metals.
(ii) According to Fajan rule, Li+ ion can polarise I– ion more than the ion because of the bigger size of the anion. Therefore, lithium iodide has more covalent character than lithium fluoride.
Long Answer TypeWhat difficulities arise in the extraction of sodium? How these difficulties are overcome?
Short Answer TypeWhat happens when:
(i) sodium reacts with hydrogen halide,
(ii) sodium reacts with acetylene,
(iii) sodium is heated with hydrogen and
(iv) sodium is treated with mercury ?
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