Question

b) Write about the position of hydrogen in the periodic table and how you will justify it.​

Answer 1

Answer:

Its electronic configuration is [1s1]. Due to the presence of only one electron in its 1s shell, hydrogen exhibits a dual behaviour, i.e., it resembles both alkali metals and halogens.

Explanation:

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Answer 2

Hydrogen has electronic configuration 1s¹. on other hand it's electronic configuration is similar to the outer electronic configuration1s¹ of alkali metal .

One the other hand like hydrogen (having electronic configuration ns²np⁵ belonging to group 17 of periodic table),it is short by 1 electron to the corresponding noble gas configuration (ns²np⁶)

Although hydrogen to a certain extent resembles both with alkali metals (group 1) and halogen (group 17),yet it differs from them as well. Therefore,it is best placed seperately in periodic table.

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