Why alkali metals are normally kept in kerosene oil? from Chemi

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The s-Block Elements

Short Answer Type

11.

Why alkali metals do not form M²⁺ions?

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12.

Name the radio active element in group 1. How does it resemble with the remaining elements of the group?

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13.
Why alkali metals are normally kept in kerosene oil?

This is because in the air they are easily oxidised to oxides which may dissolve in the moisture of the air to form hydroxides or they also combine directly with water vapours and catch fire.

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14.

Why lithium cannot be stored in kerosene?

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15.

Why does lithium form complexes?

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16.

Why are alkali metal ions diamagnetic and colourless?

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17.

Why are alkali metals the most electropositive in nature?

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18.

Find out the oxidation state of sodium in Na₂O₂.

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19. Explain why is sodium less reactive than potassium.

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20.

What happens when Magnesium is burnt in the air ?

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