Q. 314.0( 10 Votes )

“Hydrogen occupies a unique position in Modern Periodic Table”. Justify the statement.

Answer :

Hydrogen occupies a unique position in Modern Periodic Table because of the following reasons:


a. The valence shell configuration of hydrogen and alkali metals is same. Both have only one electron. Thus some of the properties of hydrogen and alkali metals are similar and hence they are placed in group 1.


b. Both hydrogen and halogens need just one electron to complete their valence configuration. Thus they shows similar properties and are placed in group 17.


c. Apart from these properties, hydrogen shows some other unique properties such as they form oxides that are neutral in nature. Metals form basic oxides and halogen form acidic oxides.


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