Alkali metals, though white, impart characteristic color to the flame because of

1. excitation and coming back of valence electrons to the original level.
2. oxidation of metal in the presence of flame.
3. excitation of valence electrons.
4. gain of electrons.


 

Subtopic:  Physical Properties |
 73%
From NCERT
NEET - 2022
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Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field?
1. K
2. Rb
3. Li
4. Na

Subtopic:  Physical Properties |
 75%
From NCERT
NEET - 2017
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Among the following which one has the highest cation to anion size ratio?

1. CsF

2. LiF

3. NaF

4. CsI

Subtopic:  Physical Properties |
 69%
From NCERT
AIPMT - 2010
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