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Summary Classification of elements and periodicity in properties
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Handwritten cheat sheet for Classification of elements and periodicity in properties by JEE 2020 , GATE, and CSIR topper.
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CLASSIfICATION OF EEMENIS AND PERIODICLTY NPROPERIES
The medem perodic table is tased on the fac
that
not
Vs Z s Shalght white
5-block
Gp. I&2
[inest gas] ns' r alkali metals
[nert gas] ns² foY altaline earth metals
Al etements are metalg
xp. no. - no. cf valance e
Hase low M.P e B.Pmpat colous to Flame
P- block
4yp 13- 18 ; nsnp' o ns np
Nitrogen furilg (phicogens)IOggen
Contin metal, non-metals
fuiy Cchaleogens)is.
mealoids
no. = lO_no. of valancee
D- block
arp 3 - I2; Cn-)dns'-2
They are modesahely reachve shooing propet ties.
tn be" s&p bloch called toonstion metals
Zn, Cds Hg do not show most prapertier of
arisiton metal adue te completely flled d:orbitals
Used as Catalyst
axp no. no. of e in(n-t) dsubshel t valance e
, F- block
asp 3 (o-2)Fn-)&
also caled sare sth mebls
Ameng lanhanoid only Pm is rodiaadtie
Elenens affer u92 are syntheically prepared
and are called trasuancn elermert
|Helium belongs to s- block
Naring elenents
nil pent
un 6 bex
2 bi 7 sept
3
8
quod enn
eg212 bitun tbi biunbi wm Cbub)
|Effechve naeleax change (Zat)
|An e experdences 2 orceg
)Attrachon of nucleus
Repulhon of inneg e(Soeeninglsheilding efec)
Zeff = Attrachan - Repulsion
6- Sareening onstat or Slalers cnstant
|Ability to Cause sareeni ng efect
s-orbital> p-osbital > dorstal f-obilal
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