Question

how is an element indicated in chemistry​

Answer 1

Answer:

Elements are commonly indicated by a chemical symbol, the atomic number and the mass number as shown. ... The atomic number or proton number or electronic number is written in the left subscript.

Answer 2

Answer:

Explanation:

Elements are commonly indicated by a chemical symbol, the atomic number and the mass number as shown.

   The nucleon number or mass number is written in the left superscript.

   The atomic number or proton number or electronic number is written in the left subscript.

Example:

The element cobalt having atomic number 27 and mass number 59 is represented as Co.

Fluorine with atomic number 9 and mass number 19 is abbreviated as F.

For symbols of other elements Symbol (chemistry) - Wikipedia

Earlier pictographic symbols were also used by alchemists.