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Q.
Which one of the following cations gives a brick red flame by flame test?
BHUBHU 2009
Solution:
Alkali and alkaline earth metals $( Ca , Sr , Ba )$ give characteristic colour when introduced in Bunsen flame.
$ Ba ^{2+} - $ Apple green
$Sr ^{2+} - $ Crimson red
$Ca ^{2+} - $ Brick-red