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Because the chromium ion is in its trivalent form.

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What letters do you use to write 3 in roman numerals?

You use only one letter to write the Roman Numeral "3". That's the letter "I", as three is III.


Do you use a comma before III?

You do not use a comma before III, or before any Roman Numeral, if it is part of a name such as King George III.


Is A a Roman numeral?

The Roman numeral system does not use the letter A.


What does roman numeral III -v mean?

Roman numeral III -v does not have a standard representation in Roman numerals. Roman numerals are typically represented by a combination of letters, with each letter corresponding to a specific value. III represents the number 3, while the use of a negative sign (-) is not a standard practice in Roman numerals. Similarly, the letter v represents the number 5, so the combination III -v does not have a clear meaning in the context of Roman numerals.


What as the first roman numeral use and its value?

If you think to 1 (one) the Roman numeral is I.


When do you use roman numerals in a chemical name?

Roman numerals are used in chemical names to indicate the oxidation state of transition metals in compounds. This is important because many transition metals can exhibit multiple oxidation states, and the Roman numeral clarifies which specific state is present in the compound. For example, in iron(III) chloride (FeCl₃), the Roman numeral III indicates that iron has a +3 oxidation state.


Is the roman numeral llll still used on modern clocks?

No, the Roman numeral for 4 is IV, not llll. The use of llll is a common mistake, but traditional Roman numeral representations on clocks and other time-related devices use IV instead of llll for the numeral 4.


What is roman numeral M?

The Roman numeral M represents 1000. In ancient Roman use it did not always mean 1000, but it does today.


What is xp in roman numrerals?

The Romans did not use the letter p as a numeral, therefore xp is not a genuine Roman numeral.


How do you line up roman numerals on page?

To align Roman numerals on a page, you can use a combination of manual spacing and tab stops. First, set a tab stop at the desired position where you want the Roman numeral to align. Then, use the tab key to align each Roman numeral with the tab stop. Adjust the tab stops or spacing as needed for consistent alignment across the page.


How do you make Roman numeral 9?

To write the number 9 in Roman numerals, you would use the symbol 'IX'. This is made by combining the Roman numeral for 1, 'I', and the Roman numeral for 10, 'X', subtracting 1 from 10.


How would you write 843 in roman number?

843 is expressed as DCCCXLIII