Choose the correct order : a)`K gt Ca gt Mn` (Reducing strength) b)`Mo(IV) gt Mo(III) gt Mo(II)` (Electronegativity order ) c)`Mo (II) gt Mo(III) gt Mo(IV)` (Electronegativity order ) d)`Fe(I) lt Fe(II) lt Fe(III)` (Electronegativity order )

Assertion Boiling point of halogen acids are in the order HF gtHBr gt HCl gt HI Reasoning Electronegativities are in the order F gt Cl gt Br gt I .

Assertion Boiling point of halogen acids are in the order HF gtHBr gt HCI gt HI Reasoning Electronegativities are in the order F gt CI gt Br gt I .

Consider the following orders: (i) HF > HCl > HBr > HI : Acidic strength (ii) CH_2 lt "CCl"_4 gt CF_4 : Electronegativity of central 'C' - atom (iii) Mg^(2+) lt K^(+) lt S^(2-) lt Se^(2-) : Ionic radius (iv) Ni > Pd > Pt : Ionic radius (v) As^(5+) gt Sb^(5+) gt BI^(5+) : Stable oxidation state (vi) Li^(+) lt Mg^(2+) lt Al^(3+) : Hydration energy (vii) Cl > Br > F > I : Electron affinity How many of these are correct orders?