In which of the following chemical equat...

In which of the following chemical equations, the abbreviation represent the correct states of the reactants and products involved at reaction temperature?

`2H_2(I)+O_2to2H_2O(g)`

`2H_2(g)+O_2(I)to2H_2O(g)`

`2H_2(g)+O_2(g)to2H_2O(I)`

`2H_2(g)+O_2(g)to2H_2O(l)`

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Which of the following arrangements does not represent the correct order of the property stated against it?

`Sc lt Ti lt Cr lt Mn:` number of oxidation states

`V^(2+) lt Cr^(2+) lt Mn^(2+) lt Fe^(2+)`: paramagnetic behaviour

`Ni^(2+) lt Co^(2+) lt Fe^(2+) lt Mn^(2+):` Ionic size

`Co^(3+) lt Fe^(3+) lt Cr^(3+) lt Sc^(3+)`: stability in aqueous solution.

`V^(2) lt Cr^(2+) lt Mn^(2+) lt Fe^(2+)` : paramagnetic behaviour

`Ni^(2+) lt Co^(2+) lt Fe^(2+) lt Mn^(2+)` : ionic size

`Co^(3+) lt Fe^(3+) lt Cr^(3+) lt Sc^(3+)` : stability in aqueous solution.

`Sc lt ti lt Cr lt Mn` : number of oxidation states.

`Li_2O+2KClrarr2LiCl+K_2O`

`[CoCl(NH_3)_5]^+ +5H^+rarrCo^+2 +5NH_4^+ +Cl^-`

`[Mg(H_2O)_6]^2+ +(EDTA)^4-rarr[Mg(EDTA)^2+ +6H_2O`

`CuSO_4 +4KCNrarrK_2[Cu(CN)_4]+K_2SO_4`