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  4. Atomic number of an element is 22. The highest O.S. exhibited by it in its compounds is

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Q. Atomic number of an element is 22. The highest O.S. exhibited by it in its compounds is

Redox Reactions

Solution:

The element is Ti (At. no. 22). Electronic configuration is $1s^2, 2s^2p^6, 3s^2p^6d^2, 4s^2$. the energy level of 3d and 4s is very close. It can have $Ti^{4+}$ O.S.