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advanced videos Hello Friends now we are
going to talk about what is mendeleev's
periodic table so before we should know
that there were various known peoples
who were have classified the elements
and that have led to the formation of
the modern periodic table and they were
known as the Doberenier's  Newlands
 cooke's as well as iam also got to
know about Luther Mayer's contribution
in the classification of elements so now
we are going to talk about the main one
that the person which on the basis of
which the model predictable has been
evolved that is mendeleev's and we are now
going to talk about Mendel's periodic
table so let us talk about that
so now we are going to talk about
mandalas periodic table so mentally we
have made a very great contribution in
the classification of elements and
because of which we have led in a
conclusion to form modern periodic table
that we are now seeing in our textbooks
or you know daily basis when we are
talking about if for a science to it but
this manually periodic table that we are
going to talk about it was not a very
easy task for him because the
classification of the elements was also
necessary along with the chemical
properties as well as for the physical
properties and moreover the contribution
of Mendeleev had given an advance
knowledge for us to understand that he
had made a prediction for the unknown
elements that may have been discovered
or that we're yet to be invented so he
have placed few spaces in in the
periodic table also by which it had made
his prediction a very rightful thing so
as to describe experi table that was
been made by him so let us understand
that how he had contributed in the
formation of its periodic table so let
us study about that so Mendel abused
physical and chemical properties of the
elements as well as of their several
components and developed in law known as
many lives periodic law so Mendeleev
have arranged the elements in such a way
that they had a basically similar
properties tabular properties or might
have a similar physical properties so
based on this properties here arrange
the elements and he had made the
arrangement and have made a law that is
which stated known as mental use
periodic law and what does this man
lirik log means let us study about that
also so the maintenance periodic law
states that the physical and chemical
properties of elements are the periodic
functions of their atomic beam so the
change in physical property or the
change in chemical property that was
because of all the similarities in the
chemical property and the physical
properties there because of the atomic
weights of the substance or the atomic
weights
the elements and based on this he had
made this law which was regarding and
concerned towards the atomic weight when
it comes to the communal property or the
physical property of the elements so
this was known to him and it's periodic
you know so he arranged the elements in
the paper
consisting of vertical columns that are
business groups and horizontal rows
basically known as periods so he had
also arranged this manner so for he was
the first one to arrange in this manner
and having the similar properties when
it comes to group and variations that
could see with respect to the atomic
weight in the rows that is in the
periods so he had made a great
contribution in the formation of a puree
table but now we are going to study
about war
how does he had made those arrangement
and because of which we have seen a
revolution thing in the periodic table
so by arranging those elements he had
made a concern that the elements with
similar properties were arranged in the
same group so he made a arrangement in
such a manner that the elements which
Halleck same properties might be
chemical properties they were arranged
in a same group so they were originated
in same group as less he left several
gaps in the periodic table proposing
that some of the elements were still
undiscovered so here also made an
arrangement in such a manner that first
of all what we have got to know that the
chemical properties are same and
secondly he had made a few gaps in the
periodic table of his periodic table
where he assumed that some elements are
yet to be disturbed and will be placed
in that empty space that it had it had
made form so let me give an example by
showing this diagram this diagram is
nothing the whole experience about the
mender is editable but it causes a few
elements that was in the magnet of
spirit even so let us see that
so this is these are those elements you
should wear in the many lives periodic
table so it starts from the hydrogen as
you could see hydrogen helium beryllium
boron and this all said to be in periods
as you could see well the vertical
columns are basically known as the
groups so in this case he had made
several groups and he named those groups
as four hydrogen helium and till
rubidium he had made the group known as
Group one and again for this it had made
group two then it moved to three then
four then five six seven and this group
were called to be group eight but this
are the eight groups that he had made or
searched to classify the chemical
properties based on the atomic weight
and but talking about the next thing
that after that the helium neon means
the no I guess there also been very
discovered and because of which he had
made those groups to be called as group
zero which was placed here which was
placed here and suppose he had the
extreme left of the magnetic periodic
table and on that position helium neon
or those noble gases they've been placed
so therefore totally it makes the
mentally predictable to have actually
nine groups and originally this was the
one which had eight groups and talking
about the periods it consisted of twelve
periods but in this day I am I am
showing only few periods as you could
see
but the talking about the next point
that the first 492 it was explaining
that the here arrange the elements in
such a manner that they will have
similar properties with respect to the
group so this all will have would have
the similar properties as we could see
in the group so he had arranged in that
manner and moreover you could see that
there are empty spaces so this empty
spaces was being predicted by the
mandolin that some elements will take
the position in this empty spaces and
that was being true also
and but what does this empty space lair
code so let us talk about that also
so this elements were being called as we
could see that the gap that we could see
below aluminum and below silicon it was
hard to be iike aluminum or silicon so
as you could see here this space below
the aluminum as you could see these are
Mona's iike aluminum when the gaps that
are below the silicon as you could see
that would be called as iike silicon so
this where we mean that some elements
would be come and will take the place
over here so I just generalized here
just generalize the name as iike
aluminum and iike silicon so which which
will be based on which we will placed
here so so this gaps that war that was
not being filled when the Manta leaves
periodic table was being made but after
that we have got to know that the gaps
were filled after the discovery of
gallium and germanium so in this space
where they see as you could see that
this space work was being occupied by
the gallium and germanium so this
prediction was a very great influence in
understanding that how mentally we have
made a great announcement in basically
classifying those elements as well as
this prediction of it him made him
famous that because of which the modern
periodic table eyes we could see now
it's all because of him the prediction
that he had made and talking about the
next one and some places in the periodic
table which was made by him he ignored
the increasing order of atomic weight
and paste the other elements with
similar properties together for example
iron with lower atomic weight then
tellurium was placed in group 7 as you
would see that in group 7 as you could
see that the iodine which was been which
is not been mentioned here but the
iodine which was been faced it was being
placed lower to that of the tellurium
and that was belonging to the group 7 so
that was the thing that he had made a
prediction and
moreover because see that when it comes
to group seven we could see that
fluorine chlorine and then I read they
all are basically hydrogen's and hence
the reason they are kept in the same
group but moreover he had didn't made a
concern towards at some places in
increasing order of the atomic weight he
has just made a placement of those
elements in his purity table depending
on the property so this was basically
the Mendel's periodic table that I was
talking about and because of which it
had been a great influence so thank you
friends for watching this video I hope
you have understood this video that how
many of you have played a very important
role and what are its importance when it
comes to the periodic table of Mendel so
thank you fans for watching this video I
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