Chalcogens forms many halides like `MX_(6)` `MX_(4)` `MX_(2)` and `M_(2)X_(2)` .Compounds of fluorine with oxygen are called oxygenfluorides because F is more electro negative than O , but other halogens (Cl, Br, I) are called halogen oxides.

Consider the following reactions: MX_(4)+X'_(2) to MX_(4)X_(2)' If atomic number of M is 52 and X and X' are halogens and X' is more electonegative than X. Then choose the correct statement regarding the given information:

Halogens react with each other to form a number of compounds called interhalogen compounds. Their genral formula is AX_(n) , where A is less electronegative halogen while X is a more electronegative halogen and n is its number. The interhalogen compounds are essentially covalent and more reactive than the halogens since the bond A-X is weaker than A-A or X-X bond. The reaction of interhalogens are similar to those of halogens. Which of the following interhalogen compound is not possible ?

Halogens react with each other to form a number of compounds called interalogen compounds. Their genral formula is AX_(n) , where A is less electronegative halogen while X is a more electronegative halogen and n is its number. The interhalogen compounds are essentially convalent and more reactive than the halogens since the bond A-X is weaker than A-A or X-X bond. The reaction of interhalogens are similar to those of halogens. Which halogen shows maximum oxidation state in forming interhalogen compound ?

Halogens react with each other to form a number of compounds called interalogen compounds. Their genral formula is AX_(n) , where A is less electronegative halogen while X is a more electronegative halogen and n is its number. The interhalogen compounds are essentially convalent and more reactive than the halogens since the bond A-X is weaker than A-A or X-X bond. The reaction of interhalogens are similar to those of halogens. How many lone pairs of electrons are present on chlorine in ClF_(3) molecule ?

Halogens react with each other to form a number of compounds called interalogen compounds. Their genral formula is AX_(n) , where A is less electronegative halogen while X is a more electronegative halogen and n is its number. The interhalogen compounds are essentially convalent and more reactive than the halogens since the bond A-X is weaker than A-A or X-X bond. The reaction of interhalogens are similar to those of halogens. Which of the following statement is wrong for interhalogen ?

Which of the statement is/are true about the reactivity of halogenation of alkanes ? The reactivity ordar is F_(2) gt C1_(2) gt Br_(2) gt I_(2) . I. Lower the activation energy for the chain initiation step, more reactive is the halogen. II. Lower the activation energy for the first chain propagation step, more reactive is the halogen. III. More negative is the overall heat of the reaction (Delta H_(r)^(@)) of halogenation ofg alkane, more reactive is the halogen. IV. Lower the activation energy for the second chain-propagation step, more reactives is the halogen.

Account for the following : a) Moist SO_(2) decolourises KMnO_(4) solution. b) In general interhalogen compounds are more reactive than halogens (except fluorine). c) Ozone acts as a powerful oxidizing agent

Transition metals combine with halogens at high temperature to form compounds called halides. On account of high activation energy , the reactions require high temperature to start, but once the the reaction is started , the heat of reaction is sufficient to maintain the continuity . Metals in higher oxidation state form flourides as it is the most electronegative element . Flourides are ionic in nature . The chlorides , bromides and iodides have ionic as well as covalent character . Halides of metals is higher oxidation states are relatively unstable and hydrolysed very easily . DeltaH_(f) is negative for

(a) Draw the molecular structures of the following compounds : (i) N_(2)O_(5) " " (ii) XeOF_(4) (b) Explain the following observations : (i) Sulphur has a greater tendency for catenation than oxygen. (ii) ICI is more reactive than I_(2) . (iii) Despite lower value of its electron gain enthalpy with negative sign, fluorine (F_(2)) is a stronger oxidizing agent than Cl_(2) .

Oxidation number is the charge which an atom of an element has in its ion or appears to have when present in the combined state. It is also called oxidation state. Oxidation number of any atom in the elementary state is zero. Oxidation number of a monoatomic ion is equal to the charge on it. In compounds of metals with non metals, metals have positive oxidation number while non metals have negative oxidation numbers. In compounds of two difference elements, the more electronegative element has negative oxidation number whereas the other has positive oxidation number. In complex ions, the sum of the oxidation number of all the atoms is equal to the charge on the ion. If a compound contains two or more atoms of the same element, they may have same or different oxidation states according as their chemical bonding is same or different. The oxidation state of the most electronegative element in the products of the reaction between BaO_(2) and H_(2)SO_(4) are