Model $2-$ Prefixes and Suffixes

$\backslash$table$[[$Prefix$,$Numerical Value$],[$mono$-,],[$di$-,],[$tri$-,],[$tetra$-,],[$penta$-,],[$hexa$-,],[$hepta$-,],[$octa$-,],[$nona$-,],[$deca$-,]]$

$\backslash$table$[[$Molecular Formula,Name of Compound$],[BC{l}_3,$Boron trichloride$],[S{F}_6,$Sulfur hexafluoride$],[I{F}_7,$Iodine heptafluoride$],[N{I}_3,$Nitrogen triiodide$],[N_2{O}_4,$Dinitrogen tetroxide$],[C{l}_{2}O,$Dichlorine monoxide$],[P_4{O}_4,$Tetraphosphorus decoxide$],[B_5{H}_9,$Pentaboron nonahydride$],[B{r}_3{O}_8,$Tribromine octoxide$],[Cl{F}^2,$Chlorine monofluoride$]]$

Examine the prefixes in Model $2.$ Fill in the numerical value that corresponds to each prefix.

What suffix $($ending$)$ do all the compound names in Model $2$ have in common?

Carefully examine the names of the compounds in Model $2.$ When is a prefix NOT used in front of the name of an element?

Consider the compound NO$.$

a$.$ Which element, nitrogen or oxygen, would require a prefix in the molecule name? Explain your answer.

b$.$ Name the molecule NO$.$

Find two compounds in Model $2$ that contain a subscript of $"4"$ in their molecular formula.

a$.$ List the formulas and names for the two compounds.

b$.$ What is different about the spelling of the prefix meaning "four" in these two names?