An oxidation state of Cr in K2Cr2O7
...An oxidation state of Cr in K2Cr2O7
7
6
5
4
Correct answer is B
The oxidation state of K2Cr2O7 is +6. option A,C,D are the oxidation state of other elements like O7,C14, etc.
\(+2 + 2x + (-2\times7) =0\)
\(2x=12\)
\(x = +6\)
The thermal decomposition of copper (ll)trioxonitrate (V) yields copper (ll) oxide, oxygen and? ...
The following substances are heavy chemicals except ...
If 10.8 g of silver is deposited in a silver coulometer volume of oxygen liberated is? ...
Which of the following statements is true about ionic radius? Ionic radius ...
The most electropositive elements among the following is ...
Sodium hydroxide (NaOH) pellets are ...
Which quantum divides shells into orbitals? ...
The general formula of an alkyl halide (which represent the halide) is? ...