Alkali metals give blue solutions in ammonia. Why?

Alkali metals are soft. Why ?

Alkali metals give colour to Bunsen flame due to

Alkali metals are kept under kerosene oil. Why ?

Ethylamine is more basic than ammonia. Why ?

Ethylamine is more basic than ammonia. Why ?

Why solution of alkali metals in liquid ammonia are blue in colour and conducting in nature ? OR Solutions of alkali metals in liquid ammonia has high conductivity, paramagnetic and posses blue colour. Explain.

Why are alkali metals most suited as photosensitive materials?

Why alkali metals act as the strongest reducing agents ?