D and F - Block...

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

[AIEEE-02]

What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid -

[AIEEE-03]

The radius of La³⁺ is 1.06 Å, which of the following given values will be closest to the radius of Lu³⁺ (At no. of Lu = 71, La = 57) –

[AIEEE-03]

Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statement about cerium is incorrect -

[AIEEE-04]

 Excess of KI reacts with CuSO₄ solution and then Na₂S₂O₃ solution is added to it. Which of the statements is incorrect for this reaction -

[AIEEE-04]

Calomel on reaction with NH₄OH gives –

[AIEEE-04]

The lanthanoid contraction is responsible for the fact that -

[AIEEE-05]

 Lanthanoid contraction is caused due to –

[AIEEE-06]

Identify the incorrect statement among the following -

[AIEEE-07]

The actinoids exhibits more number of oxidation states in general than the lanthanoids. This is because  

[AIEEE-07]

In context with the transition elements, which of the following statements is incorrect?

[AIEEE-09]

Knowing that the Chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements is incorrect ?

[AIEEE-09]

Iron exhibits + 2 and +3 oxidation states. Which of the following statements about iron is incorrect?

 [AIEEE-2012]