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  3. Chemistry
  4. For the ions Sc(.III.),Ti(.IV.),Pd(.II.) and Cu(.II.) , which of the following option is correct?

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Q. For the ions $Sc\left(\right.III\left.\right),Ti\left(\right.IV\left.\right),Pd\left(\right.II\left.\right)$ and $Cu\left(\right.II\left.\right)$ , which of the following option is correct?

NTA AbhyasNTA Abhyas 2020

Solution:

$Sc^{3 +} \, \left(3 d^{0}\right), \, Ti^{4 +}\left(\right.3d^{0}\left.\right)$ are diamagnetic due to absence of unpaired electrons. While $Pd^{2 +}\left(4 d^{8}\right), \, Cu^{2 +}\left(\right.3d^{9}\left.\right)$ contain two, and one unpaired electron respectively. Hence, these are paramagnetic