Q: A Roman numeral should be used when naming whivh of the following compounds?

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The answer should be a number (like 6) not words (like six).

5

It depends on how long a distance you want to measure!

I'm assuming you mean roman numerals? VMMMCCLXXIX (The 1st V should have a line above it, but that doesn't seem to be easily reproducable with the available formatting options.)

184

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Compounds which contain transition elements. cu2so4

No. Roman numerals are only for cations that aren't in either group 1 or 2. For this, you would say Chlorine Tetroxide.

Nonpolar compounds should be soluble in CCl4 since it is a nonpolar solvent. Compounds like nonpolar organic compounds or those with only nonpolar covalent bonds tend to be soluble in CCl4.

1 is not a Roman numeral, you numeral should be written as XVIII and it represents the number 18

There may be different theories about naming items, but one is that naming and labeling items should be done. Naming and labeling items around the room, or even at home, helps children to learn pre-literacy skills.

1) The numeral reads from right to left.2) The numeral with the greatest value should be placed at the right.3) No numeral should be repeated more than three times in succession. Some old clocks and sundials use the numeral IIII to represent 4 but nowdays the numeral IV is used in order to comply with this rule.4) I may preceed V and X but should not immediately preceed any numeral of higher value.5) MMM represents 3000 but high values of thousands should be represented by a standard numeral to represent the number of thousands which is then placed within a pair of brackets, to indicate that the numeral should be multiplied by 1000. Or the numeral should have a horizontal bar placed above it, which also indicates that the numeral should be multiplied by 1000. Examples; 6000 = [VI], 91000 = [XCI], 7541 = [VII]DXLI

'lxxxv' is not a Roman Numeral. Roman numerals are written as CAPITAL letters. It should be LXXXV = 85.

The Roman numeral is XVI. There should be a bar over the X to indicate 10000.

Clocks or descendents.

at least 10

It is: 101 = CI

Generally the Roman numeral IV represents the number 4 but on some old watches and sun dials 4 is represented by the numeral IIII. The numeral IIII was correct when it was written but convention now decrees that a numeral should not be repeated more than three times. According to this rule IIII should no longer be used.