Chemistry

Potassium permanganate in alkaline medium oxidise lodide to lodate.

$2Mn{O}_4^{-}+H_{2}O+I^{\Theta }\stackrel{}{\to }2Mn{O}_2+2O{H}^{\Theta }+I{O}_3^{\Theta }(A)$            

Compound A is  . Therefore, oxidation state of 1is + 5.

For spontaneous process △G < 0

For reversible process △G = 0

Resonance energy is the energy difference between most stable resonating structure andactual structure.

From structure it is clear [CO₂ (CO)₂] has bridging carbonyl ligand.

HBr adds to alkene in accordance with Markovnikov's rule.

In presence of light allylic substitution occur.

In presence of CCl₄, addition reaction will occur.

KMnO₄ decomposes upon heating at 513 K and forms K₂MnO₄ and MnO₂.

2KMnO₄  K₂MnO₄ + O₂ + MnO₂

Group number = 11 (Atomic number = 111)