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Question: Answered & Verified by Expert
The number of elements among \(\mathrm{O}, \mathrm{Cl}, \mathrm{F}, \mathrm{N}\), \(\mathrm{P}, \mathrm{Sn}, \mathrm{Ti}, \mathrm{K}, \mathrm{Sc}\), which show more than one non-zero oxidation state is
ChemistryStructure of AtomAP EAMCETAP EAMCET 2020 (21 Sep Shift 1)
Options:
  • A 2
  • B 3
  • C 6
  • D 8
Solution:
1086 Upvotes Verified Answer
The correct answer is: 6
Sodium (+1), scandium (+3) and fluorine \((-1)\) show only one non-zero oxidation state.
The oxidation states of oxygen are \(-1,-2\) and +2
The oxidation states of chlorine range from -1 to +7.
The oxidation states of nitrogen and phosphorus range from -3 to +5.
The oxidation states of tin range from +2 to +4.
The oxidation states of scandium is +3. Scandium \((Z=21)\) does not exhibit variable oxidation states and yet it is regarded as a transition element because scandium has partially filled \(d\)-orbitals in the ground state.
The oxidation states of titanium are \(+2,+3,+4\) respectively.
Hence, the correct option is (c).

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