Comparison of lanthanoids and Actinoids Video Lecture - NEET

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about two similarity between the
lanthanides and actinides then we see
that both this lanthanides and actinides
have F orbitals right F is the valence
orbital number 2 plus 3 is the prominent
oxidation state in both lanthanides and
actinides number 3 both shows
contraction lanthanide contraction and
we have made contraction so both shows
contraction ok and in both most of them
are paramount
so paramagnetic is also one common
feature in fact electro positive most of
them shows in both of these they show
electro positive oxidation state
positive observations may see both of
these are reactive this is some of the
common things between the lanthanides
and actinides they also have some
difference so see the poor shielding
effect of 5f is more pure
so 5f has who are sitting in it who are
shielding effect as compared to 4 then 5
11 is poor or selling it okay that is
the reason why we have so much
difference the first differences
landmines have generally +3 oxidation
state but actinides say have variable
oxidation T let me draw lines
this is plus three oxidation state and
this has very evil oxidation state that
is one major difference see
paramagnetism behavior in land Knights
easy to understand and it is complex so
this is easy to understand paramagnetism
is easy to understand in lanthanide
where it's complex in actinides
lanthanides they don't form any complex
no complex formation but they form
complex okay in lanthanides we don't
have ox o ions there is no swine's the
lanthanides but yeah they have ox wines
okay lanthanides except this guy
promethium all are non radioactive so
these are non radiative except from a
theme but actinides all are idiot okay
so this is the major difference between
the lanthanides and it sticks to me
America the question is name the
remember of lanthanide series which is
known to exhibit +4 oxidation state we
have seen that see DM C DM topic number
8 exhibit +4 oxidation T and axonal
contraction is weighted from element to
element then land my contraction why I
just told that 5 F shielding effect is
pure water should be needed as compared
to 4 X sin the shielding effect is polar
the contraction is all the more visible
so actinide contraction is more visible
than lambda in contraction
okay because contraction is all because
I have to take nuclear charge
experienced by the valence electron
so the siglemic this poor they 15
nuclear child experienced by the valence
electrons or the more and third the size
will be less compared the
electrochemistry of antibiotics with
that of lanthanides with special
reference to electronic cultivation
oxidation state atomic and chemically
active so we talk about the electronic
configuration let's talk about the
lanthanides lanthanides electronic
configuration is xenon for f 0 to 14 5 D
0 to 1 6 s to talk about actinide the
electronic configuration is 1 to 14 60 0
to 1 7 s together there is a difference
in electronic configuration okay so in
fact this 5 F orbital takes part in the
morning to a greater extent in actin I
talked about the oxidation state
oxidation state lanthanides mostly plus
3 oxidation state some has +2 and +4
also but this is most active oxidation
state if you talk about actinide it has
greater range of oxidation see as a
greater range of oxidation state and
this is primarily because this 5 F 16 7
s orbital are coming comparable energies
and then they have greater range of
oxidation see if you talk about atomic
and ionic size both shows contraction
but actinide contraction is more
prominent then lanthanide contraction
because at night contraction is because
of 5 F and lanthanide contraction is
because of forever and 5 F has poorer
shielding effect them forever so at
night contraction is more prominent if
we talk about the chemical reactivity
now see earlier member of lanthanum
behaved like calcium right lanthanum we
talk about the lanthanum so they be here
like calcium
they behave like a lot the later members
but at nights they are highly
radioactive they're highly radiated okay
but alkalis has no action on actinides
less impact on act might why because
actinides form elective oxide layer when
they are reacted with acid okay so
Landrum the starting members behave like
calcium and then they start behave like
a monument at mites they already Atlanta
moms they are not already active only
one of them is pretty active whether
it's a non radioactive but at mites all
Aria what are a law is name important
alloy which contains on the land mines
men metals and mention it uses it over
that we explain this alloy is nothing
but a solution which is homogeneous of
two or more methods in which the metalic
radiuses of comparable size so one metal
actually replaces the other metal atom
okay so they have different physical
properties and in one the law of
lanthanides is mish MIT this is very
important law of lanthanide it has 95%
lanthanides and 5% iron right and some
amount of sulfur carbon and silicon
traces of this and this is used to make
bullets because it is strong bullets it
is also used to make thanks bankers for
fighting enemies and it is also using
gas lighters
the question is whatever inner
transition methods and decide which of
these are in a transition - you know
transition metals we know that the last
electron enters capital to tell whether
these are inner transition metals or not
if write electronic configuration let's
pick 29:29 is we know is copper and the
electronic conjugation is 1s2 2s2 2p6
3s2 3p6
3d10 or as
countess 1088 Eternia
so we seen the last electrons in clean s
plot at levy Block E this is how it is
ready so it is a D block 11 it is not F
block limit so this is cough right the
next is 59 this is trash you time IAM
anyway name doesn't matter
so let's write the electronic
configuration for this the electronic
configuration for this will be 1s2 2s2
2p6 3s2 3p6 4s2 3d10 this follows
strength 3 D 10 then 46 o p6 then 5 s 2
5 s 2 and then 4 D 10 so 10 then 5 3 6
PI P 6 and then 6 s 2 okay
and then 6 s 2 then for F it's how many
elements we are done
59 10 18 20 30 36 38 48 54 56 3 more if
you see the last electron is entering
applause so 59 is actually F block
filming same thing 74 will try so 74 59
if you see what we have
you can skip something actually so this
was 10 12 18 20 30 36 38 48 48 50 56
still here it is 56 right so this we can
write here directly 6s - where is
success to this 56 I can write dot dot
dot 6s - this is my 56 I'm done with
this okay and then after that I have 4 F
4 F can have 14 ok 6 plus 14 is how much
seventy right then we have B 4f and 5b
5d will take at the max for know because
7456 plus fourteen seventy plus four
seventy four
so if you see the last Ottomans going D
orbital so it is also not F clock
next is 95 here also we can use till 56
okay the same thing and then for F 14
that becomes seventy eight seventy and
then five D 5 D can I have the max ten
seventy plus ten eighty then 6 P 6 P can
have at the max six right 86 okay and
then 7s can have at the next to 86 plus
two 88 88 + 5 f five left
88 and we are left only with seven seven
four seven here and f can accommodate at
the max 14 so we see the last electron
is going to F o'clock so yes this is
also in a transition matter
similarly 1 0 2 we can write so till
here we had 87 or 88 8 till here we have
idiots we will put seven h2 directly
here until here we had it eight okay
then we'll put 5 7 s 2 then 5 s 5 f it
can have 14 80 plus protein is how much
1 0 2 okay that means yes this is also
my F block limit next is 1 0 4 1 0 2 I
know is 5 F 14 and then after 5 F or
this fiber amplifier where I have 60 so
this is 6 D 2 that means this is going
in the D block
it is a D block element to this is not a
it is you just fight the electronic
configuration a it will tell you whether
its s blog a blog deep
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