Question

The trend of basicity of lanthanoid hydroxides

A. increases across the lanthanoid series
B. decreases across the lanthanoid series  
C. first increases and then decreases
D. first decreases and then increases
Answer :   decreases across the lanthanoid series
Solution :
Basicity of lanthanoid hydroxides decreases across the series due to decrease in ionic radii across the series.

Releted MCQ Question on
Inorganic Chemistry >> D and F Block Elements

Releted Question 1

When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is

A. $$1:1$$
B. $$1:2$$
C. $$2:1$$
D. $$9:4$$
View Answer
Releted Question 2

Which of the following is the weakest base

A. $$NaOH$$
B. $$Ca{\left( {OH} \right)_2}$$
C. $$KOH$$
D. $$Zn{\left( {OH} \right)_2}$$
View Answer
Releted Question 3

One of the constituent of German silver is

A. $$Ag$$
B. $$Cu$$
C. $$Mg$$
D. $$Al$$
View Answer
Releted Question 4

Which of the following dissolve in hot conc.$$NaOH$$  solution

A. $$Fe$$
B. $$Zn$$
C. $$Cu$$
D. $$Ag$$
View Answer

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D and F Block Elements

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