A-LevelChemistryChemical bonding9701/12 · May/June 2010 · Q311 Mark
Sodium hydrogensulfide, NaSH, is used to remove hair from animal hides. Which statements about the SH⁻ ion are correct? 1 It contains 18 electrons. 2 Three lone pairs of electrons surround the sulfur atom. 3 Sulfur has an oxidation state of +2.
A1, 2 and 3 are correct
B1 and 2 only are correct
C2 and 3 only are correct
D1 only is correct
✓ Correct answer
B: 1 and 2 only are correct
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