A chemical symbol refers to a chemical element; the first letter of a symbol depends on the chemical element.
The "symbol" for a compound is properly called a chemical formula, and for methylene chloride it is CH2Cl2.
The state symbol aq means it dissolves in water when it is written after a chemical compound in a chemical reaction.
The chemical symbol of rutherfordium is Rf.
Beryllium's chemical symbol is Be.
The chemical symbol for iron is Fe and the chemical symbol for nickel is Ni.
The "symbol" for a compound is properly called a chemical formula, and for methylene chloride it is CH2Cl2.
If it can be written :- as or As then it is a roman coin. If it is always written As (even in mid sentence) it is the chemical symbol for Arsenic.
Each chemical element has a standardized chemical symbol, not a formula.
The state symbol aq means it dissolves in water when it is written after a chemical compound in a chemical reaction.
The chemical symbol of chlorine is Cl.
The chemical symbol of a chemical element is derived fom the his name: the first letter or the first two letters.
The subscript indicating the number of atoms relative to a chemical symbol is located immediately after the chemical symbol and is written in a smaller font size at the bottom right corner of the symbol.
The state symbol aq means it dissolves in water when it is written after a chemical compound in a chemical reaction.
The MOLAR RATIO or Coefficient. Do NOT confuse with numbers AFTER the chemical symbols. e.g. 2NaOH + H2SO4 = Na2SO4 + 2H2O The Molar Ratios (Coefficients) are in order from left to right ' 2:1 :: 1:2 '. In Na2SO4 the numbers '2' refers to TWO sodium atoms And '4' refers to FOUR oxygen atoms. In '2H2O'. The left hand '2' refers to TWO molar ratios. The '2' to the right of 'H' (Hydrogen) refers to each molecule having two (2) hydrogen atoms. NB When no number is shown, read it as '1'(one). This applies to molar ratios and to atom numbers in a molecule. e.g. NaOH ; No numbers, so there is only ONE of each atom. Similarly, H2O means only ONE(1) atom of oxygen, in the molecule.
The chemical symbol of rutherfordium is Rf.
The number of atoms present in a given molecule. Water ; H2O ; means TWO hydrogen atoms and ONE oxygen atoms Similarly Carbon dioxide ; CO2 ; means ONE atom of carbon and TWO atoms of oxygen in the molecule. NB Although 'Answer'com' does not allow me to show it, these numbers after an atom should be written 'subscript'.
"Figure" can be a written symbol of a number or a diagram or a geometrical shape. It is also used as a word in place of "calculate".