What is the oxidation number of alkali metals in their compounds?

Titanium shows magnetic moment of '1.73 (BM)' in its compound. What is the oxidation number of 'T' in the compound.

Find the oxidation number of the ions in ionic compound ?

The oxidation state of Cromium in the compound Cr_2O_3 is +3: What is the oxidation state of Cromium in the compound CrO_3 ?

Some rules related to oxidation number are given below. Correct the mistake. Oxidation number of alkali metals and alkaline earth metals is +2

Find out the oxidation number of 'Cr' in the following compounds ?(Hint : oxidation number k = + 1 , 0 = -2 ) Cr_2O_7