S Block Elements - Uses & Occurrence of Alkali Metals Video Lecture - Class 11

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elements part 8 is brought you by exam
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let's understand the uses of alcalá it
is used to make allies these alloys are
used to make airplanes light weights
metal also used to make bearings using
industries they are used to make
electrochemical cells sodium is used to
be mixed with petrol to increase the
mind of the patron but now it is not
also to into the condition of engine
actually but now it is not used because
we are using the lead free petrol
nowadays and it is used as a coolant in
nuclear reactor subsidies nuclear
reactors their sodium is used as coolant
here sodium was used as the anti
knocking engine
potassium plays a huge role in our
biological system we will discuss about
this way there will discuss the role of
production in our body it is also used
for fertilizes fertilization or things
for fertilizers and this fashion is also
used to manufacture so they are so many
stage of alkali metals put so nuclear
reaction body cells petroi dears being
used to firm to make allowance also
cesium is used for making photoelectric
cells this is solar cells even right
here cesium is used to make verbally
nuisance let's talk about the occurrence
of this alkali metals so if you see the
lithium sodium potassium rubidium cesium
franca and if you see this sodium and
potassium be the worst are never star is
possibly by weight and single stars part
per million so sodium in potassium
double star that means they they have a
good percentage at least two point two
seven percentage by weight and this is
one point four percent by weight in the
crust and they are available but if you
see the article limited as such they are
very reactive and they offer only in
combine stain as highlights are also oxy
salts a still for Tashia and sodium they
exist they are the most common element
if you compare the group element 1
element there are six and seventh most
abundant element in the Earth's crust
it's a big thing I tried to even
potassium are six and seven most element
by element in the earth crust here is
four but in small place in almost all
rocks and which easily theme is very
less within part per million
it's very less francium also is very as
a radioactive element it doesn't exist
very nation very very rare this is my
occurrence on alkali metals and up
meaning potassium so the most heat
available not in Free State
they are almost six and seven most
abundant element in the earth thank you
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