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Which of the following alkaline earth me...

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

A

Ra

B

Ba

C

Sr

D

Ca

Text Solution

Verified by Experts

The correct Answer is:
B
Calcium, strontium, and barium impart characteristic brick red, crimson, and apple green colors to the flame, respectively. Radium also imparts crimson color. When these alkaline earth metals or their compounds are put into a flame, the electrons absorb energy and are excited to higher energy level.s when they drop back to the original state, energy is emitted in the form of visible light of particular frequency. The flame test for Ca, Sr and Ba is helpful is their detection in qualitative analysis and estimation.
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