Alkali metals are not found in free state why?

Alkali metals are good reducing agents why?

Frenkel defects are not found in alkali metal halides.

Give reason - Why : Gold is found in the free state in nature.

State whether the following statements are true or false: All metal oxides are not easily reduced to metals on being heated with carbon.

Write one property of hydrogen which resembles alkali metal atoms and one property which resembles halogen atoms.

Frenkel defect is not found in halides of alkali metal why?

What makes alkali metal halides sometimes coloured, which are otherwise Colourless?