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chap 7/2

QuestionAnswer
IF HEXANE ADDED TO AQUEOUS SOLUTION WITH HALOGEN ... SOLUTION OF IODINE IN HEXANE IS VIOLET.
BONDING IN COMPOUNDS OF HALOGENS IS .. IONIC BONDING
HALOGENS 1- CHARGE COZ... HIGH ELECTRONEGATIVITY VALUES & WHEN HALOGEN ATOM ACCEPTS AN ELECTRON THE
ELECTRON CONFIGURATION COMPLETE.
GROUP I1 AND 2 METAL HALIDES ARE IONIC OR COVALENT ... IONIC CACL.
GROUP 3 ALF3 IS IONIC COZ... METAL AND NON METAL.
ANHYDROUS ALUMINIUM CHLORIDE IS COVALENT OR IONIC....? COVALENT ALCL3.6H2O EACH ALUMINIUM SURROUNDED BY 6 H20 MOLECULES WITH DATIVE COVALENT BONDS FROM OXYGEN TO THE CENTRAL AL3+ ION. ANHYDROUS ALUMINIUM
CL- SUBLIMES ON HEATING PRODUCING... GAS AL2CL6.
IN THIS DIMER THE 2 ALCL3 UNITS JOINED BY DATIVE BONDS .. . EACH FORM A CHLORINE ATOMS. THE OUTER ORBIT CONTAINS AN OCTET OF ELECTRONS.
ALL ATOM IN COVALENT ALCL3 HAS ... 6 ELECTRONS IN OUTER ORBIT ITS OWN 3 PLUS OTHER 3.
A LONE PAIR IN A CL ATOM IN ANOTHER ALCL3 FORMS ... A DATIVE BOND USING AN EMPTY 3P ORBITAL OF AL.
COZ OF DATIVE BOND IN ALCL3 AL HAS ... AL HAS 4 PAIRS OF ELECTRONS IN OUTER ORBIT. AND THE 4 CL ARE ARRANGED TETRAHEDRAL.
HOW IS ALCL3 ARRANGED ... TETRAHEDARLLY.
WHEN 2 ALCL3 ATOMS JOIN ARE THERE BONDS BETWEEN THEM ... NO BONDS BETWEEN THE 2 AL ATOMS (DON’T DRAW A BOND).
BONDING WITH D BLOCK METALSà CL BR I IN WHAT BLOCK... D BLOCK METALS
D BLOCK METALS ARE ... ARE COVALENT WHEN ANHYDROUS & IONIC WHEN HYDRATED. FECL3 IS COVALENT AND SOLUBLE IN ORGANIC SOLVENTS.
HYDRATED ION ARE BONDED WITH ... 6 MOLS OF WATER BONDED DATIVE COVALENT BONDS FROM OXYGEN IN WATER TO EMPTY 3D-4SP ORBITAL'S OF THE IRON 3+ ION. THE SHAPE IS OCTAHEDRAL & THE CORNERS LABELLED OH2.
COVALENT BONDING:à HALOGENS FORM POLAR ... POLAR COVALENT BONDS WITH ALMOST ALL NON METALS.
FLUORINE IS THE MOST.. . ELECTRONEGATIVE. IN THE -1 OXIDATION STATE
WHEN DOES FLOURINE HAVE TO BE POSISTIVE ... WHEN BONDED TO F- OR O2-.
CHLORINE HAS 5 EMPTY 3D ORBITAL'S, SO ONE OF ... OF 3P ELECTRONS CAN BE PROMOTED.
WHY CAN A CHLORINE 3P ELECTRON BE PROMOTED ... COZ CHLORINE HAS EMPTY 3P ORBITAL.
HOW MANT COVALENT BONDS CAN CHLORINE FORM... MORE THAN 1.
OXIDISING POWER OF HALOGENS IN OR DE... DECREASE DOWN THE GROUP.
METALS REACT WITH HALOGEN TO FORM ... HALIDES
WHICH IS THE LESS POWERFUL OXIDISING AGENT IN GR7 ... IODINE FE + I2 àFEI2
IN A LIMITED SUPPLY OF O2 . 2P+ 3CL2 à 2PCL3. ... PHOSPHORUS TRICL- CAN REACT WITH CL- AND FORM PENTA CL-.
IN EXCESS CL- PHOSPHORUS PENTACHLORIDE IS FORMED. 2P + 5CL2 --> 2PI5.
Created by: ufuoma