AP EAMCET202023 Sep 2020Morning ShiftChemistrySurface ChemistryActual
Which of the following metal ions is colourless?
Options
- ATi 3 +
- BSc 3 +
- CV 4 +
- DCr 4 +
Correct answer
B. Sc 3 +
Step-by-step solution
The ions Ti 3 + ,   V 4 + ,   Cr 4 + are paramagnetic therefore, exhibit colours due to d - d transitions. The Sc 3 + ion is diamagnetic with electronic configuration of argon and does not exhibit colour.