Question

name the alkaline earth metal whose salt do not impart colour to a non-luminous flame.

Answer 1

I tell the answer may be Beryllium

Answer 2

In the identification process of different alkaline metals ,we often use the flame test method.

In this method different alkaline salts produce flames of different colours in the non-luminous flame.

But beryllium is an exception which do not produce any coloured flame is a non luminous flame.