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How would you account for the following : Transition metals form coloured compounds
Concept: Physical Properties of the Transition Elements (d-block)
Complete the following equation :
`2MnO_4^(-)+6H^++5NO_2^(-)rarr`
Concept: Important Compounds of Transition Elements
Account for the following:
Cu+ ion is unstable in aqueous solution.
Concept: Physical Properties of the Transition Elements (d-block)
Complete the following equations:Cr2O72- + 2OH- →
Concept: Important Compounds of Transition Elements
Complete the following equations : MnO4- + 4H+ + 3e- →
Concept: Important Compounds of Transition Elements
With reference to structural variability and chemical reactivity, write the differences between lanthanoids and actinoids
Concept: F-block Elements >> The Actinoids
Name a member of the lanthanoid series which is well known to exhibit +4 oxidation state.
Concept: F-block Elements >> The Lanthanoids
Out of Mn3+ and Cr3+, which is more paramagnetic and why ?
(Atomic nos. : Mn = 25, Cr = 24)
Concept: Physical Properties of the Transition Elements (d-block)
Complete the following chemical equation
Cr2O72- + 3Sn2+ + 14H+ →
Concept: Important Compounds of Transition Elements
Explain why Cu+ ion is not stable in aqueous solutions?
Concept: Physical Properties of the Transition Elements (d-block)
How is the variability in oxidation states of transition metals different from that of the non-transition metals? Illustrate with examples.
Concept: Physical Properties of the Transition Elements (d-block)
Indicate the steps in the preparation of KMnO4 from pyrolusite ore.
Concept: Important Compounds of Transition Elements
How would you account for the following?
Transition metals and their compounds act as catalysts.
Concept: Physical Properties of the Transition Elements (d-block)
Complete the following chemical equations :
Cu + H2SO4(conc.) →
Concept: Important Compounds of Transition Elements
Name the elements of 3d transition series that show maximum number of oxidation states. Why does this happen?
Concept: Electronic Configurations of the d-block Elements
Which transition metal of 3d series has positive E° (M2+/M) value and why?
Concept: Electronic Configurations of the d-block Elements
Out of Cr3+ and Mn3+, which is a stronger oxidising agent and why?
Concept: Electronic Configurations of the d-block Elements
Name a member of the lanthanoid series that is well-known to exhibit +2 oxidation state.
Concept: Important Compounds of Transition Elements
The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of \[\ce{Cr^{3+}}\] ion is ______.
Concept: Physical Properties of the Transition Elements (d-block)
Assertion (A): Cu cannot liberate hydrogen from acids.
Reason (R): Because it has positive electrode potential.
Concept: Physical Properties of the Transition Elements (d-block)
