The first or only letter of an element symbol must be capital; any other letter(s) must be lower case. (So far, there is never more than one other letter in the permanent symbol for any element, but the temporary names of some of the highest atomic weight elements often include two additional letters.)
The correct order for writing the name of a compound is element-symbol subscript followed by the element and subscript (e.g., H2O for water).
A shorthand way of writing an element is using its chemical symbol, which is typically a one- or two-letter abbreviation representing the element's name. For example, "H" for hydrogen, "O" for oxygen, and "Na" for sodium.
A correct symbol for a chemical element cannot contain two uppercase letters or start with a lowercase letter. For example, "Hn" or "eS" would not be correct symbols based on the rules.
ClO4- Note that this is not an "element" and hence doesn't have an "element symbol."
The chemical symbol for the element Xenon is Xe.
If you think to chemical symbol of an element this is standardized after IUPAC rules.
Symbol (southwest high school Sophomore MN)
To simple identify a chemical element, avoiding the writing of the whole name.
The correct order for writing the name of a compound is element-symbol subscript followed by the element and subscript (e.g., H2O for water).
A shorthand way of writing an element is using its chemical symbol, which is typically a one- or two-letter abbreviation representing the element's name. For example, "H" for hydrogen, "O" for oxygen, and "Na" for sodium.
A correct symbol for a chemical element cannot contain two uppercase letters or start with a lowercase letter. For example, "Hn" or "eS" would not be correct symbols based on the rules.
A chemical symbol is simply an abbreviated way of writing a particular chemical. The symbol is a much more convenient way of identifying each element. Some examples are "O" for oxygen and "H" for hydrogen.
When naming compounds, follow these general rules: for ionic compounds, the metal name is written before the nonmetal name with an -ide ending (e.g. sodium chloride); for covalent compounds, use prefixes to indicate the number of atoms of each element (e.g. carbon dioxide). For writing chemical formulas, the element symbol is used with subscripts to indicate the number of atoms of each element present in the compound. Remember to balance the charges to ensure a neutral compound.
The convention used for the chemical symbol of an element is so that you can determine the atomic mass.
ClO4- Note that this is not an "element" and hence doesn't have an "element symbol."
The symbol of helium is he
There is no element with symbol a or A even