EASY
12th ICSE
IMPORTANT
Earn 100

Draw the structure of manganate and permanganate ion.

Important Questions on d-and f-Block Elements

EASY
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 14
Write the formula of a compound in which transition metal is in +6 oxidation state.
EASY
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 15
In chromic acid CrO3, Cr has d0 configuration but it is bright orange coloured solid, why?
EASY
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 16
Reactivity of transition elements decreases almost regularly from Sc to Cu. Why?
EASY
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 17
Why there is striking similarities (horizontal and vertical) among successive members of the transition series?
EASY
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 18
Why Cu+ salts are colourless, while Cu2+ salts are coloured?
EASY
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 18
The elements of d-series exhibit a larger number of oxidation states than the elements of f-series. Explain.
EASY
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 19
Chromium is a typically hard metal while mercury is a liquid. Why?
EASY
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 20
What happens, when KMnO4 is heated?