Question

why salt of se3+, ti4+,v5+ are colourless ​

Answer 1

Answer:

Sc3+,Ti4+,V5+ All of them have completely empty d-orbital . That is no unpaired electron are present and d-d trasition are not possible, hence their salt are colourless. Sc3+,Ti4+,V5+ All of them have completely empty d-orbital .

Explanation:

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Answer 2

Answer:

bcoz they dont have any unpaired electron which can impart color of their solution and also fulfilled of orbital do not impart any color to compound....