Advertisements
Advertisements
प्रश्न
Account for the following :
Manganese shows maximum number of oxidation states in 3d series.
Advertisements
उत्तर
Mnexhibits all the oxidation states from (+ 2) to (+ 7)
`"_25Mn = [Ar]3d^s 4s^2`
Mn+ = 
Half filled (stable)
Mn2+ = 
Mn3 = 
Mn4+= 
Mn5+ = 
Mn6+ = 
Mn+7 = 
→ Highest oxidation state = (+7)
APPEARS IN
संबंधित प्रश्न
Complete the following equations: Cr2O72- + 14H+ + 6I →
Name the oxometal anions of the first series of the transition metals in which the metal exhibits the oxidation state equal to its group number.
Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with iron (II) ions? Write the ionic equation for the reaction.
Indicate the steps in the preparation of KMnO4 from pyrolusite ore.
Complete the following equation :
Complete the following chemical equations :
Cu + H2SO4(conc.) →
Answer the following question.
When MnO2 is fused with KOH in the presence of KNO3 as an oxidizing agent, it gives a dark green compound (A). Compound (A) disproportionates in an acidic solution to give a purple compound (B). An alkaline solution of compound (B) oxidizes KI to compound (C) whereas an acidified solution of compound (B) oxidizes KI to (D). Identify (A), (B), (C), and (D).
When \[\ce{Cu^2+}\] ion is treated with \[\ce{KI}\], a white precipitate is formed. Explain the reaction with the help of chemical equation.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
