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All the alkali metals give characteristi...

All the alkali metals give characteristic flame test. The decreasing order of frequency of light emitted by them is

A

`Li gt Na gt K gt Rb gt Cs`

B

`Li gt Na = K = Rb gt Cs`

C

`Li = Na gt K gt Rb = Cs`

D

`Cs gt Rb gt K gt Na gt Li`

Text Solution

Verified by Experts

The correct Answer is:
D
According to colours formed in the flame test the wavelength roder of alkali metals is `CsgtRbgtKgtNagtLi`
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