Which is the formula for tungsten(VI) sulfide?
The Correct Answer and Explanation is:
The formula for tungsten(VI) sulfide is WS₆.
Explanation:
To determine the formula of tungsten(VI) sulfide, follow these steps:
- Identify the elements and their oxidation states:
- Tungsten (W) is a transition metal, and in tungsten(VI) sulfide, the Roman numeral VI indicates that tungsten has an oxidation state of +6.
- Sulfur (S), in sulfides, typically has an oxidation state of -2.
- Balance the charges:
- The oxidation state of tungsten is +6, and the oxidation state of sulfur is -2.
- To balance the total charges, we need enough sulfur ions to counterbalance the +6 charge from tungsten.
- Determine the ratio of tungsten to sulfur:
- Since the charge on each sulfur ion is -2, you need 3 sulfur ions (each with a charge of -2) to balance the +6 charge from tungsten (because 3 × -2 = -6).
- This results in a 1:3 ratio between tungsten and sulfur.
Thus, the formula for tungsten(VI) sulfide is WS₆, where one tungsten (W) atom is paired with six sulfur (S) atoms to form a neutral compound.
Additional Information:
- Tungsten(VI) sulfide is a highly covalent compound and often occurs as a dark solid.
- Tungsten compounds like this one are useful in various industrial applications, including as lubricants and catalysts.
