Among the following, the number of elements showing only one non-zero oxidation state is
O, Cl, F, N, P, Sn, Tl, Na, Ti
← IIT-JEE 2010 · Paper 2
ChemistryInteger+3Question 9 of 57
IIT-JEE 2010 · Paper 2, Chemistry question 9
Answer and worked solution
Official answer: 2
Only one non-zero oxidation state:
- F: always −1 (most electronegative element).
- Na: always +1.
More than one: O (−2, −1, +2 in ), Cl (−1 to +7), N (−3 to +5), P (−3, +3, +5), Sn (+2, +4), Tl (+1, +3), Ti (+2, +3, +4).
Answer: 2