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Why was hydrogen given a separate …

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Why was hydrogen given a separate position in periodic table

    • Posted by Rahul Yadav 5 years, 8 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Yogita Ingle 5 years, 8 months ago

    Hydrogen shows some similarity with both alkali metals and halogens, it differs from them on some grounds. Unlike alkali metals, hydrogen does not possess metallic characteristics. On the other hand, it possesses a high ionization enthalpy. Also, it is less reactive than halogens.

    Owing to these reasons, hydrogen cannot be placed with alkali metals (group I) or with halogens (group VII). In addition, it was also established that H+ ions cannot exist freely as they are extremely small. H+ ions are always associated with other atoms or molecules. Hence, hydrogen is best placed separately in the periodic table.

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