The atomic number.
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the def for variable is a letter or symbol used to represent a missing number in an algebrac expression
Depending upon which symbol you mean, it usually means that symbol DOUBLED.
the pue
Sign-value numeral systems, such as Roman numerals, repeat certain symbols a certain number of times to show how many should be in a particular decimal place. Abjad numeral systems use letters of the alphabet to represent numerical values.
The radical symbol ( √ ) followed by a line above what's in the radical, designates positive square root.
The symbol used to represent a nucleus is "Au", which is a combination of the atomic symbol and mass number.
variable
The number above an element's symbol in the periodic table represents its atomic number, which indicates the number of protons in the nucleus of an atom of that element. Atomic number determines the element's unique identity and its placement in the periodic table.
b
The atomic number.
There is no symbol above the number 0 on my phone keyboards. So clearly, it is not a standard.
A power or exponent.
A variable
variable
A variablẹ
Variable: A letter or symbol used to represent a number or quantities that vary