18 Questions
Which ion is expected to have the highest magnetic moment among V 4+, Mn 4+, Fe 3+, and Ni 2+?
Mn 4+
Which statement is not a consequence of Lanthanoid contraction?
Zr and Hf occur together in the earth's crust in their minerals
Which transition metal ion is expected to have the highest third ionization enthalpy among V, Mn, Cr, and Fe?
Mn
In which outer electronic configuration does an atom achieve the highest oxidation state?
(n-1)d8 ns2
What is the spin-only magnetic moment of Ni 2+ in aqueous solution (in units of Bohr magneton)?
1.73
Which pair of ions is colorless?
Sc3+, Zn2+
What is the reason for the high complex forming tendency of transition elements?
They have vacant d-orbitals
Which property contributes to the colored compounds formed by transition metal ions?
D-d transition
Which ion shows the least paramagnetic property?
Cu
Where is the effect of Lanthanoid contraction observed?
Hf
Which ion has a magnetic moment of 1.73 Bohr magneton?
VCl3
What contributes to the catalytic activity of transition elements and their compounds?
Their ability to adopt multiple oxidation states and their complexing ability
What is the main reason attributed to the tendency of transition elements to form colored compounds?
d-d-transition in the last but one shell.
Among Zn2+, Ni2+, and Cr3+, which statement is true based on their colors?
Only Zn2+ is colorless, and Ni2+ and Cr3+ are colored.
Which oxide of manganese is the most acidic in nature?
Mn2O7
In general, transition elements exhibit their highest oxidation states in compounds with which elements?
F and O
What are the maximum oxidation states shown by V, Cr, Co, and Sc respectively?
+5, +6, +3, +3
If a non-metal is added to the interstitial sites of a metal, what happens to the metal?
More ductile
Test your knowledge on transition metal compounds and their properties such as coloured compounds and catalytic activity. Identify the factors contributing to the coloration of these compounds and the reasons behind their catalytic behavior.
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