Anomalous Properties of Lithium Video Lecture - Inorganic Chemistry for NEET

anomalous behavior of lithium
reasons for its abnormal behavior are
mainly due to the following reasons one
lithium atom and it's iron has very
small size lithium iron on account of
its small size exerts high polarizing
effect on anions in its compounds -
lithium atom has highest ionization and
salty and low electro positive character
3 non availability of d-orbitals in its
valence shell some of the important
abnormal characters of lithium are given
below one it is more harder and lighter
than other alkali metals - it is not
affected by air easily and does not lose
its luster even on melting 3 it reacts
slowly with water to liberate hydrogen
for it does not react with oxygen below
0 degrees centigrade when burned in air
or oxygen it forms only monoxide Li 2 O
is much less basic than oxides of other
alkaline metals 5 lithium is the only
alkali metal which directly reacts with
nitrogen to form Li 3n 6 lithium
hydroxide decomposes at red heat to form
much less basic than oxides of other
alkali metals don't compose to Li o H
gives rise to Li 2 O plus h2o
7 lithium bicarbonate li h co 3 is known
in solution but not in solid state while
the bicarbonates
of the alkali metals unknown in solid
state 8 Li 2 Co 3 lithium carbonate is
less stable as a decomposes on heating
Li 2 Co 3 gives rise to Li 2
Oh plus co2 9 Li no.3 lithium nitrate on
heating gives a mixture of no.2 and Oh -
while nitrates of rest of alkali metals
yield only oxygen for Li no.3 gives rise
to 2 Li 2 O plus for no.2 plus o2 2
nano3 gives rise to 2 na and O 2 plus O
2 10 little fluoride li f lithium
phosphate Li PL for lithium oxalate Li
to c200 for lithium carbonate Li 2 Co 3
etc a sparingly soluble in water the
corresponding salts of other alkali
metals are freely soluble in water xi Li
CL lithium chloride is highly delacro
sent and soluble in alcohol and pyridine
licl lithium chloride separates out from
atria solution as hydrated crystals licl
2 h2o
whereas fluorides of other alkali metals
are insoluble in organic solvents and do
not form hydrated crystals under
ordinary temperatures