Question

write formulas for the following binary molecular compounds:
a) xenon tetrafluoride
b) disulfur decafluoride
c) iodine heptafluoride
d) sulfur trioxide
e) dinitrogen monoxide
f) pentaboron nonahydride

Explanation:

Step1: Identify prefixes for each element

For each compound, use Greek prefixes to find the number of each atom:

• "tetra-" = 4, "di-" = 2, "deca-" = 10, "hepta-" =7, "tri-"=3, "mono-"=1, "penta-"=5, "nona-"=9

Step2: Assign element symbols

Use standard chemical symbols: Xe (xenon), F (fluorine), S (sulfur), I (iodine), O (oxygen), N (nitrogen), B (boron), H (hydrogen)

Step3: Write formula with subscripts

Subscripts match the prefix number for each element (omit subscript 1 for the first element if prefix is absent)

Answer:

a) $\text{XeF}_4$
b) $\text{S}_2\text{F}_{10}$
c) $\text{IF}_7$
d) $\text{SO}_3$
e) $\text{N}_2\text{O}$
f) $\text{B}_5\text{H}_9$