p-Block Elements - Chemistry Revision Notes

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1. Wall about education

p-BLOCK ELEMENTS
THEIR COMPOUNDS

OUR PRODUCTS

BRP issn E | Tores | ego ett

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2. p-BLOCK ELEMENTS & THEIR COMPO!

TRENDS IN PROPERTIES OF p-BLOCK ELEMENTS.

Electonogal,
lenzation enthalpy,
‘oxidizing power

Ka

8 © N 0 F Ne

si P sc Ar | Electonegatnty,

q | een
metal character ieization ently,

Coialent raus, san dor Waals
ads, enthalpy of atomization
(upto group 14), metalic character

(A) GROUP 13 ELEMENTS : THE BORON FAMILY

Oxidation state and trends in chemical reactivity :
General Oxidation State = + 3.
Reactivity towards acids and alkalies
2Al(s) +6 HCl(aq) ——> 2AP* (aq) + 6 Ct(aq)+ 3 H.(9)
2A\(s) + 2NaOH (aq) + 6H,0 (1) ——> 2Na’ [AI(OH),J (aq) + 3H,(9)
Sodium tetrahydroxoaluminate (Ill)

Reactivity towards halogens
2E(s) + 3X, (9) >2EX,(s) (X= F,CIBr, |)

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3. fever

BORON (B):
Some Important Reactions of Boron and its compounds :

HBO. Na,B.0,
he
BN M 5.0, 41.80,
B¿O,+ HÉ
“eB,
Nagb,+H o,
soso mc
HO osa, Jus o,
HBO, + NaOH, pa
mcteno, HAT apo, J
PS
ruso, +30, Xo
me (EN) categinogente
x20), apne
Er 2 Pe.
Ho ron E Ho, prb
T =
Air
E wet
er,
ao [non
150°C, 750 alm
A

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