Sc3+ is colourless in solution whereas ti3+ is coloured.why
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Sc has 3 electrons in it's outermost shell.
Its electronic configuration will be
(Ar) 3d1 4s2
so when it is in present in the form of Sc3+
it looses all the electrons from the outermost shell and hence attains configuration of a nobel gas .. ie becomes diamagnetic.
whereas in case of Ti .. its atomic no. is 22 and has 4 electrons in its outermost shell
(Ar) 3d2 4s2
in its Ti3+ state its ec will be
(Ar) 3d1 only
hence it shows paramagnetism and is coloured.
Its electronic configuration will be
(Ar) 3d1 4s2
so when it is in present in the form of Sc3+
it looses all the electrons from the outermost shell and hence attains configuration of a nobel gas .. ie becomes diamagnetic.
whereas in case of Ti .. its atomic no. is 22 and has 4 electrons in its outermost shell
(Ar) 3d2 4s2
in its Ti3+ state its ec will be
(Ar) 3d1 only
hence it shows paramagnetism and is coloured.
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JaneGomez
JaneGomez Ambitious
Sc has 3 electrons in it's outermost shell.
Its electronic configuration will be
(Ar) 3d1 4s2
so when it is in present in the form of Sc3+
it looses all the electrons from the outermost shell and hence attains configuration of a nobel gas .. ie becomes diamagnetic.
whereas in case of Ti .. its atomic no. is 22 and has 4 electrons in its outermost shell
(Ar) 3d2 4s2
in its Ti3+ state its ec will be
(Ar) 3d1 only
hence it shows paramagnetism and is coloured.
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