An aqueous ion produces an intense blue solution and has the electron configuration…
CHEMISTRY · Multi-part · CBSE · Chemistry · d- and f-Block Elements · d- and f-Block Elements
Problem
An aqueous ion produces an intense blue solution and has the electron configuration
[Kr]4d6.
Answer the following questions.
(a) Determine the total number of electrons in the ion.
(b) Deduce the identity of the corresponding neutral element and the oxidation state of the ion. Show all reasoning.
(c) Write the full ground-state electron configuration for the neutral atom.
(d) Provide a qualitative explanation, based on electronic structure, for why this ion is colored in solution whereas Zn2+ (whose ground-state configuration is [Ar]3d10) forms colorless solutions.