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QAIPMT-2010-Ch-2012: NEET 2010 Chemistry - Class 12 AIPMT-2010-Ch-2012 Solution: An aqueous solution is 1.00 molal in KI. Which change will…
An aqueous solution is 1.00 molal in KI. Which change will cause the vapour pressure of the solution to increase? Addition of NaCl Addition of Addition of 1.00 molal KI Addition of water
Multiple Choice Options
- A La 3+ (Z = 57)
- B Ti 3+ (Z = 22)
- C Lu 3+ (Z = 71)
- D Se 3+ (Z = 21)
Step-by-Step Verified Solution
La 3+ : 54 e � = [Xe]
Ti 3+ : 19 e � = [Ar] 4s 0 3d 1 (Colour)
Lu 3+ : 68 e � = [Xe] 4f 14
Sc 3+ : 18 e � = [Ar]
As ions which have unpaired electrons exhibit colour
in solution.
Ti 3+ has an outer electronic configuration
of 4s 0 3d 1
, i.e., 1 unpaired electron.
Thus its solution will be coloured.