Flame tests identify alkali metals when they are burnt, which of the combinations given is the correct one?
Correct answer: A. Li: Red
- A. Li: Red
- B. Na: Lilac
- C. K: Red
- D. Cs: Yellow
Explanation
Flame tests are used to identify alkali metals based on the characteristic colors they produce when burned:- Lithium (Li): Red- Sodium (Na): Yellow- Potassium (K): Violet- Caesium (Cs): Blue
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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