Question

Cuprous ion is colourless, while cupric ion is coloured because

Solution

Correct option is

Cuprous ion has a completed d-orbital and cupric ion has incomplete d-orbital

Cuprous ion (Cu+) 3d10 (completely filled d-subshell)

                         

Cupric ion (Cu2+) 3d9 (one unpaired electron)

                         

SIMILAR QUESTIONS

Q1

Carbon in wrought iron is present as

Q2

Which of the following is called white vitriol?

Q3

Nessler’s reagent is

Q4

Coinage metals show the properties of

Q5

Which of the following elements does not belong to the first transition series?

Q6

Zinc does not show variable valency like d-block elements because

Q7

Which of the following statements is not true in regard to transition elements?

Q8

The catalytic activity of the transition metals and their compounds is ascribed to their

Q9

 

Of the ions Zn2+, Ni2+ and Cr3+,

(atomic number of Zn = 30, Ni = 28, Cr = 24)

Q10

In which of the following metallic bond is strongest?