Question

Question #aed05

Answer 1

1. `P-4S_6` = tetra phosphate hexasulfide. or Phosphate +3 sulfide.

2. # SF_6. Sulfur hexaflouride. or Sulfur+6 flouride

Answer 2

There are two acceptable ways of naming these compounds.

Explanation:

(a) Using multiplying prefixes

mono = 1, but the prefix is omitted before the name of the first element

tetra = 4

penta = 5

hexa = 6

Thus,

`"P"_4"S"_5` is tetraphosphorus pentasulfide

`"SF"_6` is sulfur hexafluoride

(b) Using Roman numerals to indicate oxidation numbers

When an element can have more than one oxidation number, the oxidation number is indicated by a Roman numeral in parentheses immediately following the name (no spaces) of the element.

Thus,

`"P"_4"S"_5` is phosphorus(V) sulfide

`"SF"_6` is sulfur(VI) fluoride