Question:
Chloride of which of the following element is coloured?
Chloride of which of the following element is coloured?
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Cobalt chloride is colored due to the presence of unpaired electrons in its \( 3d \) orbitals.
Updated On: Apr 22, 2026
- Hg
- Ag
- Co
- Zn
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Identifying colored chlorides.
Among the given elements, cobalt forms a colored chloride due to the presence of unpaired electrons in its \( 3d \) orbitals, which can absorb certain wavelengths of light.
Step 2: Explanation of the options.
- (1) Hg: Mercury chloride is not typically colored.
- (2) Ag: Silver chloride is a white solid, not colored.
- (3) Co: Cobalt chloride forms a blue color in its hydrated form, and a pink color in anhydrous form, due to the presence of unpaired electrons in the \( 3d \) orbitals.
- (4) Zn: Zinc chloride is colorless and does not exhibit any color.
Step 3: Conclusion.
The correct answer is (3) Co.
Among the given elements, cobalt forms a colored chloride due to the presence of unpaired electrons in its \( 3d \) orbitals, which can absorb certain wavelengths of light.
Step 2: Explanation of the options.
- (1) Hg: Mercury chloride is not typically colored.
- (2) Ag: Silver chloride is a white solid, not colored.
- (3) Co: Cobalt chloride forms a blue color in its hydrated form, and a pink color in anhydrous form, due to the presence of unpaired electrons in the \( 3d \) orbitals.
- (4) Zn: Zinc chloride is colorless and does not exhibit any color.
Step 3: Conclusion.
The correct answer is (3) Co.
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