Silicon Dioxide Video Lecture - NEET

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silicon dioxide silicon dioxide is
nothing but yes I but the question is if
it is sio2 why it is solid right if it
is just sio2
it's just si in two molecules here why
it is solid right why it is in this sand
is all silicon dioxide you know right we
have so much sand around us and the
white is so hard there has to be
something in the structure but discuss
about the structure of silicon dioxide
but the reason why for at this point is
the moment you think of sio2 you think
it should be cancel it right then let
let the thing some time with them since
mu that silicon dioxide is solid there
has to be something in structure so let
us see that so you see the ninety nine
ninety five pursue the earth to us is
made of silica and silicates and silicon
dioxide is known as silica and it occurs
in various crystal graphic form craw
cause side amide they are some of the
crystalline forms silica right in they
are in this is the best see right
diamond in graphite were interred in
comfortable similarly here also they are
convertible in but they are
interconvertible
the temperature we can convert from one
form to and if you see the structure
that's why it is solid because it is a
covalent again its covalent again but it
is a solid single thing which we have in
my mind carbon the three-dimensional
micro structures three now is not two
it's three actually so yeah what you are
showing is a two-dimensional but
actually it is three-dimensional solid
structure the each silicon is bonded to
the tetrahedral map but for example if
you see these guys want to do for oxygen
right and in its normal fam it's almost
unreactive why because this bond is very
high same thing this I told right carbon
monoxide has to be basic but is neutral
why because the carbon oxygen bond is
strong here also
it's almost strong bundle right you see
all this silicon it's all tied up and
the
energy is very high so it's almost
unreacted that's why you see the sand is
very very unreactive but it resists
actually attacked by hydrogen and
halogen
but even at higher temperature this HF
and innovation react it reacts only with
these two actually other halogens other
died here recalled as it beats it
doesn't die but HF and NaOH it reacts
and at high temperature they sand if you
react with sodium hydroxide it reacts
and it will say you three and Sandy
reacts with its s il-4 and then sio2
right it's the construction this is
three dimensional view of sio2 this is
one silicon molecule combined with two
and unversity can valio combining two
that way I found this kind of three
dimensional structure alright so let's
talk about the usage of silicon dioxide
this cost if you see these extensive use
as piezoelectric material what is
piezoelectric material materials which
and you applied pressure or stress or
physical action if you do other material
it produce electricity
that's called piezo means pressure
electric bass electricity so we apply
pressure over my tray it usually just
and this is used to develop extremely
accurate clock you will learn more about
this in physics and you see that
piezoelectric materials are used to make
talks radio is television broadcasting
like the mobile radio communication also
these are extensively used here my looks
of cost silica gel is used as a
dehydrating kitchen you must have since
because cellulite and when you buy a
water bottle or something it will have
silica gel just to make sure that it
doesn't get or absorb water humber
atmosphere and smell so the silica gel
is used as dehydrating agent it absorbs
all the water right and this guy is a
amorphous form silica it is using
filtration plants also and the most
critical use of silicon has to make
electronics as I told this electronic
chip is using TV mobile fridge
anything we talked about you have all
the electronics item
because the next question is a good
question
welcome Silicon Valley in us gotta think
you must have all this term Silicon
Valley all the good companies Microsoft
Google until they are the Silicon Valley
how come this got this name because that
particular area is in California
actually all these already gone IT
companies are their IT and the hardware
companies are there and all this
hardware and IT companies they need one
thing to run that is my craft itself and
that is made of silicon make up silicon
so that saw this city quarantine because
the silicon city has most of the IT and
hardware company the software the
hardware company is often hard to come
here
these are deposited run right and
process is made from silicon and that's
why it's named silicon novelist thank
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