Which is the characteristic flame colouration of Li?

why do alkali metals give characteristic flame colouration?

Which of the following metal(s) do (es) not give characteristic flame colouration?

Which of the following metal(s) do (es) not give characteristic flame colouration?

Alkali metals show characteristic flame colouration. The flame colour of Li are crimson red while that of K is violet. How will you account for this?

Assertion : Be gives characteristic flame colouration. Reason : Ionization energy of Be is high.

Why do not Be and Mg give characteristic flame colouration while others do ?

How do alkali metal salts give characteristic flame colours?

Which of the following elements cannot give characteristic colouration to the flame ?

What is the characteristic colour of the flame test for potassium?