d and f-Block E...

The equivalent weight of MnSO₄ is ___ of its molecular weight when it is converted to MnO₂.

Given below are some points of comparison between actinoids and lanthanoids. Choose the incorrect statements from among them.

a. Actinoids show greater number of oxidation states than lanthanoids.
b. The chemistry of actinoids elements is not so smooth as that of lanthanoids.
c. Most of the cations of actinoids and lanthanoids are coloured.

Which of following is used in the preparation of the optical glass of the camera having a high refractive index?

The correct order of ionic radii of Yb³⁺, La³⁺, Eu³⁺ and Lu³⁺ is:

In which of the following pairs of elements, does the element with the higher atomic number have a lower ionization energy as compared to the preceding element?

For Cr, the oxidation states (+ 2), (+ 3) and (+ 4) are well known, but the most stable oxidation state amongst these is

The values of the reduction potentials of Cr³⁺ and Mn³⁺ are -0.41V and +1.51V, respectively. Choose the option that is inferred from the given factual information?

H₂O₂ gives blue colour on treatment with acidified solution of potassium dichromate. This is due to the formation of