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engineering HSC and IIT JEE main and
advance videos Hello Friends now we are
going to talk about ionisation enthalpy
initially we have talked about the
properties of the periodic table that is
a ionic sized atomic size and now we are
going to talk about the high resolution
enthalpy so let us talk about it
so now let us talk about ionisation
enthalpy so the amount of energy
required to remove the most loosely
bound electron from an isolated gaseous
at them off an element in its ground
state is called as ionisation enthalpy
so what does this means actually this
means that we have to remove an electron
from an atom which is presently in the
gaseous state so if we have removed an
electron from a from an atom which is
present in a gaseous state so what will
happen basically since the atom has now
no electrons because has less electrons
compared to the earlier one because we
have removed one electron so even though
we can remove one we can remove multiple
electrons also so therefore this energy
required to remove the loosely bonded
electrons the first losses reported
electrons will be known as the
ionization enthalpy for example suppose
if we have an atom name as X and it is
present in a gaseous state so what will
happen actually since the atomic size in
this case will be more and there would
be an electron which would be loosely
bonded with the nucleus or missing would
say it will be loosely held in the
overall atom so what we have to do is we
have to remove that electron and the
energy required to remove that electron
is basically known as ionization
enthalpy so therefore once I have to
remove the electrons therefore this X
will be turned into X plus ion while
removing one electron so therefore the
energy required to remove the electron
is basically known as ionization
enthalpy which is denoted by Delta edge
of I it is now it is known to be
ionization enthalpy as an S it is known
to be
ionization potential or ionization
energy so it is very easy to understand
this concept for that let me make you
another video another example first you
could understand this corset suppose
when it comes to Adam
so therefore the atom consists of
suppose I have I am talking about the
sodium so sodium contains 11 electrons
and then s 11 protons so when we are
talking about the na plus ions so what
happens is this na plus ions will have
one electron less so there is a
possibility that we could convert the MA
that is which is present in an atomic
form M we could convert it to an na plus
n how suppose if the number of electrons
that have been present in the sodium is
basically 11 as you could see that is
the one will have the two electrons one
should first shall we have two electrons
the second shall we have total eight
electrons when the last shell will have
a 1 in it so now this is what we are
talking about MA atom that is sodium
atom in which is present in s history so
in this case as we could see that the
number of electrons in the number of
shells in this case is 1 2 & 3 the main
shells are 3 and this this is the
outermost electron or the loosely bonded
electron of the sodium atom so because
in this case the nucleus will have not
that much of influence to this electrons
we must at least compared to the other
itas it is mostly loosely bonded about
eight electron so therefore we have to
remove this electron and for that we
will require energy so suppose if we
have if we have removed this electron so
now this sodium which was present in an
atomic form will now be converted into a
and a plus I by removing one electron so
we have to remove one electron so the
energy required to remove this loosely
bonded electron is nothing known as
ionization enthalpy and moreover we
could say that we have converted an atom
into a nine and that is positive so
ionization enthalpy is only related to
conversion of a atom into an ion or
conversion often I am into more positive
I am so therefore this is how we have
converted an atom into an ion so this
process is basically known as ionization
enthalpy
this force is known as ionization and
the energy required to remove the
electron is to nest I mention enthalpy
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