Question

Justify the position of hydrogen in the periodic table on the basis of its electronic configuration

Answer 1

Answer:

one electron in valence shell

Explanation:

Hydrogen is placed in first group (IA) because it has electronic configuration 1s^2, and all elements placed in first group has electronic configuration 1s^2.

In other words it has one electron in it's outermost shell and all elements in first group has one valence electron. Even though hydrogen is not a metal it can be placed with metals due to its electronic configuration.

Hope u understood.

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Answer 2

Answer :

Hydrogen has been placed at the top of the alkali metal in group, but it is not a member of the group.

Its position is not justified properly because of its electronic configuration as (1s1). It can be placed with alkali metals because it also has similar configuration (ns1) as alkali metals.

However, it can also be placed along with halogen in group 17 since just like halogen it can acquire inert gas configuration by accepting one electron.

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