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MaxineWhen the element has more than one ion charge(check the periodic table) because u need to specify which charge is being used if there's more than one. Ex) manganese oxide. We need to know what ion charge is on manganese as there could be 2+ 3+ or 4+. If it's manganese(IV)oxide then we know the answer!!= Mn2O4. Ps. The 2 comes from oxygen. We know it's 2 bcuz it's the only ion charge O has:)
Where the oxidation state of the cation (e.g. metal) can have multiple values as in in iron which may be Fe2+ or Fe3+ then to distinguish the two iron oxides:-
FeO iron(II) oxide
Fe2O3 iron(III) oxide
When there is only one oxidation state as in sodium then there is no need for roman numerals
NaCl is sodium chloride not sodium(I) chloride
where there are mixed oxidation states of an element as in Fe3O4 which contains Fe2+ and Fe3+ then both oxidation states are shown
Fe3O4 iron (II,III) oxide.
They depicts the group number. The groups are made according to the chemical properties of elements. They are the vertical columns in the Periodic Table.
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What is the romain numeral for HgO?
The Roman numeral for HgO is not applicable. Roman numerals are typically used for representing numbers rather than chemical formulas. HgO is the chemical formula for mercury(II) oxide.
Why is a roman numeral need in the names of compounds containing the elements tin copper lead?
Roman numerals are used in the names of compounds containing these elements because they have multiple oxidation states. The Roman numeral denotes the oxidation state of the metal in the compound. Tin, copper, and lead can exist in different oxidation states depending on their chemical environment, so specifying the oxidation state is essential for proper naming.
Are groups of the periodic table written in roman numerals?
No, groups of the periodic table are typically identified by numbers rather than roman numerals. Roman numerals are more commonly used to differentiate between elements with the same atomic number but different oxidation states.
How are oxidation state of transition metals in the names of metal compounds?
Roman numerals are used to indicate oxidation states.
What are chemical symbols and chemical formulas used for herion?
The chemical symbol for heroin is C21H23NO5. Its chemical formula represents the specific elements and their proportions in a single molecule of heroin. Chemical formulas are used to identify and represent the composition of substances, which is important in understanding their properties and behavior.
