00:01
So the question indicates these are molecular compounds.
00:05
And in naming molecular compounds, you need to use numerical prefixes to indicate how many of each type of, many atoms of each element you have, other than mono on the first one.
00:19
So we don't say mononitrogen.
00:21
We just say nitrogen, and we don't do anything to change its ending.
00:26
But then try for the three chlorines, and instead of chlorine chloride.
00:35
And then again, no mono on the iodine, just iodine.
00:42
And for seven, it's hepta.
00:47
Now, heptoidide, usually if the, of course, the prefix is always end in a vowel.
01:00
If the next element starts with a vowel, we don't use the, at the end of the numerical prefix, we call it heptiodide...