The lanthanides and actinides are a group of closely-related elements which are often found in the products of nuclear fission of heavy elements. They can be separated from one another and from other nuclear products by:

distillation

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ion-exchange chromatography

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evaporation on a metal foil

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slow melting

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Solution

The correct option is C ion-exchange chromatography
Ion-exchange chnomatography is used for separation of lanthanides & actinides.

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Similar questions

Metals are usually hard. Hence metals are strong and can with stand heavy loads over them. Due to this property they are difficult to cut and can be used in the construction of heavy machines, buildings etc. On the other hand, non-metals are usually brittle. On hammering them they break into small pieces converting themselves into the fine powder.

In the following elements identify the element that is relatively brittle.

Q. Spot the mistakes in the given statements and correct them.
(a) Lanthanides and actinides are included in the main body of periodic table.
(b) Titanium, chromium and manganese are coinage elements.

Q. Which of the following element(s) are used in the nuclear fission process to generate nuclear energy ?

Q. (a) What is a group in the periodic table? In which part of a group would you separately expect the elements to have (i) the greatest metallic character (ii) the largest atomic size?
(b) In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group.
(c) From the standpoint of atomic structure, what determines which element will be the first and which the last in a period of the periodic table?
(d) Explain why, the properties of elements are repeated after 2, 8, 18 and 32 elements in the periodic table.
(e) What are the advantages of the periodic table?

Match the following statements

$\begin{matrix} (a)f block elements & (i) G r o u p 1 a n d 2 (b)d block elements & (i i) G r o u p 13 t o 17 (c)p block elements & (i i i) G r o u p 3 t o 12 (d)s block elements & (i v) L a n t h a n i d e s a n d A c t i n i d e s \end{matrix}$

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The lanthanides and actinides are a group of closely-related elements which are often found in the products of nuclear fission of heavy elements. They can be separated from one another and from other nuclear products by:

The correct option is C ion-exchange chromatographyIon-exchange chnomatography is used for separation of lanthanides & actinides.

The correct option is C ion-exchange chromatography
Ion-exchange chnomatography is used for separation of lanthanides & actinides.