Question

The colour of 62Sm3+ is yellow. The expected colour of 66Dy3+ is

Solution

Correct option is

Yellow

The electronic configuration of 62Sm3+ is 4f4 and that of 66Dy3+ is 4f9. The colour of fn and f14 – n are often identical.

SIMILAR QUESTIONS

Q1

A mixture of TiOand BaSO4 is called

Q2

Transition metal with low oxidation number will act as

Q3

Which of the following pair will have effective magnetic moment equal?

Q4

Which is the least soluble in water?

Q5

Which of the following ions form most stable complex compound?

Q6

Arrange Ce3+, La3+, Pm3+ and Yb3+ in increasing order of their ionic radii

Q7

 

The basic character of the transition metal monoxide follows the order

(At. No. of Ti = 22, V = 23, Cr = 24, Fe = 26)

Q8

The metallic oxide which impart purple colour to pottery is

Q9

The actinoids showing +7 oxidation state are

Q10

The lanthanoids contraction relates to