How many of the following alkaline earth metals give characteristic colours in the Bunsen flame?
Be,Mg,Ca,Sr,Ba,Ra

Which of the following alkaline earth metals imparts green color to the flame?

Why does alkali metals impart characteristic colour to the flame?

Which of the following alkaline earth metals do not impart any color to the flame?

How many alkaline earth metals are known?

The alkaline earth metals, which do not impart any colour to Bunsen flame are :

How many of the following salts impart characteristic colours to the Bunsen flame ? NaCl, KCl, CuCl_(2), BaCl_(2), CaCl_(2), SrCl_(2), ZnCl_(2), MgCl_(2), AlCl_(3)