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Question
Identify the metal that forms colourless compounds.
Options
Iron (Z = 26)
Chroorium (Z = 24)
Vanadium (Z = 23)
Scandium (Z = 21)
MCQ
Solution
Scandium (Z = 21)
Explanation:
For scandium (Z = 21) electronic configuration is 4s23d1.
After the removal of 3 electrons; (Sc3+), acquires a stable configuration (4s0d0).
Hence, it forms colourless compounds.
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Electronic Configuration
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