Question

K2 Cr2 O7 find out the oxidation state of Cr2​

Answer 1

Explanation:

The July Revolution marked the shift from one constitutional monarchy, the Bourbon Restoration, to another, the July Monarchy; the transition of power from the House of Bourbon to its cadet branch, the House of Orléans; and the replacement of the principle of hereditary right by popular sovereignty.

Answer 2

Let the Ox. no. of Cr in $\tt K_2 Cr_2 O_7$ be x.

We know that, Ox. no. of K=+1

Ox. no. of O=−2

So, 2(Ox.no.K)+2(Ox.no.Cr)+7(Ox.no.O)=0

2(+1)+2(x)+7(−2)=0

or +2+2x−14=0

or 2x=+14−2=+12

Hence, oxidation number of Cr in $\tt K_2 Cr_2 O_7$ +6.