MEDIUM
Chemistry
IMPORTANT
Earn 100

Which of the following is not correct about transition metals?

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Important Questions on The d- and f-Block Elements

EASY
Chemistry
IMPORTANT
Which one of the following ionic species will impart colour to an aqueous solution?
MEDIUM
Chemistry
IMPORTANT
The less stable oxidation states of Cr are
EASY
Chemistry
IMPORTANT
Which one of the ionic species will impart colour to an aqueous solution?
MEDIUM
Chemistry
IMPORTANT
CuSO4.5H2O is blue in colour because
MEDIUM
Chemistry
IMPORTANT

Match the compounds of column X with oxidation state of column Y.

  Column I Column II
I CrH2O6Cl3 5
II CrO5 4
III K3CrO8 6
IV NH33CrO4 3
EASY
Chemistry
IMPORTANT

STATEMENT-1: The number of unpaired electrons in the following gaseous ions:
Mn3+,Cr3+,V3+ and Ti3+ are 4,3,2 and 1, respectively.

STATEMENT-2: Cr3+ is the most stable in aqueous solution among these ions.

EASY
Chemistry
IMPORTANT
Standard reduction electrode potential of Zn2+/Zn is -0.76 V. This means:
MEDIUM
Chemistry
IMPORTANT
E values for couples Cr3+/Cr2+ and Mn3+/Mn2+ are -0.41 and +1.51 volts, respectively. Considering these values, select the correct option from the following statements.