Science, asked by narpathmali16143, 8 months ago

give reason for the following question F block elements are kept separately in the periodic table​

Answers

Answered by harshrajsingh567
5

Answer:

The reason why Lanthanides and Actinides are located at the bottom of the periodical table is because of their properties and in the block in which electrons fill up. ... The reason why inner-transition metals are located at the bottom of the periodic table, separated from the rest is because they all fill the f-block.

Answered by AdorableMe
2

Answer:

The Periodic Table arranges elements in blocks as each type of orbital fills with electrons - s,p,d,f,g,h. Alkali metals and alkaline earths are s-block filling (but could be one s-block slot). p-block six electrons to fill are trelides, tetralides, pnticides, chalcogenides, halides, inert gases (but could be one p-block slot). Transition metal d-block is ten elements (but could be one d-block slot). Filling the f-block are 14 elements, lanthanoids and actinoids. That gets sloppy to print and the elements are (or at least were) overall obscure. They get condensed.

Explanation:

However, doing so will create a very wide periodic table: The s-, p- and d-block are 18 elements wide, the f-block would add another 14, so almost double the width. Therefore, it is customary to save space and put the f-block at the bottom separately. It is not mandatory, e.g. Wikipedia uses the fully horizontal layout on element pages.

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