D and f block elements one shot, Study notes of Law

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y | | | NEET Ls RS ») Ee \ By - Mohit Dadheech (MD Sir) My sics Walla ail AL Complete Chapter Bo Practice Questions FOR NOTES & DPP BATTLEGROUND, CHECK PW APP y~N - @ Taner Framiition Elements. 52 11 qoup Cee i Lounthaotel ( Uf Seker Too SOWA r saan Ca )& Acinercl Sevied (jp) cof oes) ay —— Ly Jo loa Elements om, Which lask & Unlers Ay ip 4 cubsh Also Kinoum as Tromattion Elements. Elements seat | Tnoomplete (rq sulashols eter rm eubral , oxidatuon Stale OY UA on Kn ’ s ‘Prounsstion Elernents Sc uw TE buk Zn is not why 7 Qty haa a Ganlradin tn, Whe ut ig Conbtelured as Tne ? Electronic Confiqurations gen € conjgurahin [7 MPS Excehon> bona n-l)d So * 3d SOLER (ys) a) AUd LU23 | @) on [nb Mo, Ru, Rh Ag.) | ¥ Bol SAL (ns!) Pe Au ATOMISATION ENTHALPIES Ol. Black Metals have Higher Alormisalusn Enthallp icsz | Aug Ip STyong Tnteyvoatomc cd bibubid $3 availllity (orpat_ nat wre. On parrel<- (Ns < th-Ihe jener Greg Jo AYR qv tla Moye mde AYe Avadluble (oy Banding More © Are avin (sheng fd Imp: Ponts From NCERT ( General ports ) @ ¥ maxima at middle & Cac SUUtd. Reusen > wW A Unpaived © per of oral Is favourwele for Strong Bonding Hh Ut alomisation tend to % Metals with High. Enthalpy ¢ o. ‘ be wobke wr thery Reachons Ms) ff?) Ma) 4 gr Alomisdlon enthalpy uw qyrealer for x4 & 3% suits on Compan ty LoServiea: (4d) (54) < Yl < 9d : = More Rejuent Me- ted Roidliny KZ MELTING- POLNT @ Heghir Mp & BP iS dug to more nod & anas labora for Bending | w-)4 e. along With Ns e| Peaks yg ‘oy MAGNETIC PROPERTIES rp Ay Magni Moment A= Jn (n+ ) HIWD TI Wr (mo: Unpaied oe } | i y; . AL= V\ pout Somottring | watt ao? (Le (hea aggre) Nhauted by May eld f= Bouman Nea bai a= S56) nary thi ve un S35. ’ = VN CATALY TIC- PROPERTI (hy) Ah Biol metala & thay Compowds Chew cadalutic propemiies ee Tay Gan 4p Va pial os G2) They Cam form Complex. Thy Rta ith Reactors § Weaken Ynery Roy Hence Lower Hee Active on Puy’ QeeRT 4.3.12 Catalytic Properties The transition metals and their compounds are known for their catalytic activity. This activity is ascribed to their ability to(adopt multiple oxidation states and to form complexes. Vanadium(V) oxide (in Contact Process), finely divided iron (in Haber’s Process), and nickel (in Catalytic Hydrogenation) are some of the examples. Catalysts at a solid surface involve the formation of bonds between reactant molecules and atoms of the surface of the catalyst (first row transition metals utilise 3d and 4s electrons for bonding). This has the effect of increasing ° Se oe Ue GEESE soeeee em the concentration of the reactants at the catalyst surface and also weakening of the bonds in the reacting molecules (the activation energy is lowering). OO rN @ A» @ Also because the transition metal ions can change their oxidation states, they become more effective as catalysts. For example, iron(Ill) catalyses the reaction between iodide and persulphate ions. 21 +S,0, 31 *250,7 An explanation of this catalytic action can be given as: 2 Fe%)+ 2 lr + 2 Fe” +(1,) 2 Fe’ + S,O, > 2 Fe” + 2SO,” —_—