between tio2 and ticl3 which one is coloured and why
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The electronic configuration of Ti is [Ar]3d24s2 .
In TiCl3 the oxidation state of Ti is +3 while in TiCl2the oxidation state of Ti is +2
In case of TiCl3 there is one d electron present in 3d subshell. When light falls on the Ti3+ complex, the t2g electronis excited to eg level.this excitation take polace in greenish yellow region (≈ 5000 A°), the rest is transmitted. the complementary colour is transmitted which is violet. The colour due to this transition is called d-d transition.
In TiCl3 the oxidation state of Ti is +3 while in TiCl2the oxidation state of Ti is +2
In case of TiCl3 there is one d electron present in 3d subshell. When light falls on the Ti3+ complex, the t2g electronis excited to eg level.this excitation take polace in greenish yellow region (≈ 5000 A°), the rest is transmitted. the complementary colour is transmitted which is violet. The colour due to this transition is called d-d transition.
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