Question

schoology practice: naming covalent compounds

1. name the following compound: so₃

a. sulfur oxide
b. monosulfur trioxide
c. sulfur trioxide
d. sulfate

1. name the following compound: p₄s₁₀

a. phosphorus (iv) sulfide
b. tetrapotassium decasulfide
c. tetraphosphorus decasulfide
d. phosphorus decasulfide

1. name the following compound: sicl₄

a. monosilicon tetrachloride
b. silicon chloride
c. silicon tetrachloride
d. silicon quadchloride

1. what is the official name for h₂o?

a. hydrogen oxide
b. oxygen dinitride
c. dihydrogen monoxide
d. agua

1. name the following compound: br₆f₁₀?

a. hexabromine fluoride
b. hexabromium fluoride
c. hexabromium decafluoride
d. hexabromine decafluoride

Explanation:

1. In naming covalent compounds, prefixes are used to indicate the number of atoms of each element. For \(SO_3\), there is 1 sulfur and 3 oxygen atoms, so it is sulfur trioxide.
2. For \(P_4S_{10}\), 4 is indicated by "tetra -" and 10 by "deca -", so it is tetraphosphorus decasulfide.
3. For \(SiCl_4\), silicon is the first element and 4 chlorine atoms are present, so it is silicon tetrachloride.
4. The official name for \(H_2O\) is dihydrogen monoxide as there are 2 hydrogen and 1 oxygen atom.
5. For \(Br_6F_{10}\), 6 is "hexa -" for bromine and 10 is "deca -" for fluorine, but the correct naming gives bromine first as it is less electronegative, so it is hexabromine decafluoride.

Answer:

1. c. sulfur trioxide
2. c. tetraphosphorus decasulfide
3. c. silicon tetrachloride
4. c. Dihydrogen Monoxide
5. d. Hexabromine decafluoride