The INCORRECT statement is :
the gemstone,ruby,has ions occupying the octahedral sites of beryl.
the spin-only magnetic moment of is
the color of is violet as it absorbs the yellow light.
the spin-only magnetic moments of and are nearly similar.
(1) In ruby, the gemstone has ions occupying the octahedral sites of Aluminium oxide ion normally occupied by ion
(3) The complementary colour of violet is yellow.
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