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OXIDATION NO/3

QuestionAnswer
OXYGEN OXIDATION NO WHEN COMBINED WITH FLUORINE OR PEROXIDES SUPEROXIDE’S IS ...
THE SUM OF ON IN A NEUTRAL COMPOUND IS . O E.G IN AMMONIA NH3 COZ THE N(3-) H3(3+) =0.
THE SUM OF ON IN POLYATOMIC ION E.G. MANGANESE... E.G. MNO4-ION OXIDATION NUMBER OF MANGANESE(+7) PLUS 4 X (2-) = -1.
IF ELEMENT JOINED TO MORE ELECTRONEGATIVE ELEMENT THE OXIDATION NUMBER IS ... POSITIVE.
DEDUCE THE OXIDATION NUMBER OF CHLORINE IN NACL CLO-, CLO3-.... ON OF NA = +1 ON MUST ADD UP TO 0 SO CL = -1. LET ON OF CHLORINE =Y ON OF O IS (-2) SO MUST EQUAL - -2 +Y = -1. Y =+1 SO BASICALLY MAKE INTO EQUATION.
DEDUCE THE ON OF SULPHUR IN S042- ... LET ON BE Z , THE EQUATION IS (Z + ( 4 X 2-) = -2) Z =+6. THE PRODUCT IS AT THE TOP OF THE MOLECULE.
AN INCREASE IN THE OXIDATION NUMBER OF AN ELEMENT MEANS ... IT HAS BEEN OXIDISED (LOST ELECTRONS) .RIGHT
THE DECREASE IN AN OXIDATION NUMBER MEAN ... HAS BEEN REDUCED (GAINED ELECTRONS)(ON THE LEFT).
COMPOUND THAT CAN HAVE MORE THAN ONE OXIDATION NUMBER ARE WRITTEN EXAMPLES?... AS (ROMAN NUMERALS) E.G. MANGANESE (MNO4-) IN THE +7 STATE AND IS MANGANATE (VII). (ION IS DICHROMATE VI). IRON (III) CHLORIDE. IRON (II) SULPHATECHROMATE IN THE CR2O72- ...
POLYATOMIC ELEMENTS WHICH HAVE OXYGEN APART FORM HYDROXIDES END IN... -ATE. CHLORATE(V).
WHAT IS THYE OXIDATION NO OF FE IN ... FEO42- GOES FROM +6 TO +2 DECREASE OF 4 SO HAS 4 ELECTRONS ON THE LEFT HAND SIDE OF THE REDUCTION HALF EQUATION.
OVERALL REDOX REACTIONS: THE TOTAL CHANGE IN THE OXIDATION NUMBER OF THE ELEMENT BEING REDUCED IS EQUAL ... TO THE TOTAL CHARGE IN THE OXIDATION NUMBER OF THE ELEMENT BEING OXIDISED.
DISPROPORTIONATION IS A ... REDOX REACTION IN WHICH AN ELEMENT IN A SHAPE SPECIES IS SIMULTANEOUSLY OXIDISED AND REDUCED.
WHEN CHLORINE GAS BUBBLES INTO AQUEOUS SODIUM HYDROXIDE ... A DISPROPORTIONATION REACTION TAKES PLACE.
ONE ATOM IN THE CL2 MOLECULE IS OXIDES TO NAOCL AND ONE REDUCED TO NACL. CL2 + 2NAOH NAOCL + NACL +H2O.
S BLOCK CONSIST ELEMENT IN GROUP 1 AND 2
GROUP ONE (LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, FRANCIUM.) CALLED ... ALKALI METALS – FORM CATION 1+
S BLOCK.
GROUP 1 & 2 HAVE... DELOCALISED ELCTRONS
STRENGTH OF GR1 AND 2 DEPENDS ON STRENGTH DEPENDS ON ... RADIUS AND TYPE OF PACKING. BE AND MG HAVE CLOSE PACKED HEXAGONAL STRUCTURES
CALCIUM STRONTIUM HAVE ... FACE CENTRED CUBIC STRUCTURES
BARIUM HAS A . ..BODY CENTRED CUBIC STRUCTURE.
THE ELECTRONEGATIVE DECREASES DOWN A GROUP FROM 1.5 BERYLLIUM TO 0.9 RADIUM COZ ... MORE REACTIVE AS ATOMIC NO INCREASES..
THE IONIC RADIUS INCREASE FROM 0.031NM FOR BE2+ TO 0.140NM FOR RA2+ - SO ... ION ARE LESS POLARISING DOWN A GROUP.
POLARISATION OF AN ANION CAUSES ... VALUE OF LATTICE ENERGY CALCULATED FORM BORN HABER TO DIFFER. BERYLLIUM CHLORIDE IS THE MOST ...
GROUP 2 HIGH MP THAN GROUP 1 BECAUSE... EACH LOOSES 2 ELECTRONS TO FORM METALLIC BOND & STRONGER THAN METALLIC BOND IN GROUP 1
METALLIC RADIUS OF GROUP1 ELEMENT ... SMALLER THAN RADIUS OF GROUP 2 ELEMENT IN SAME PERIOD.
Created by: ufuoma
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