The atomic number of an element represents the number of protons in the nucleus of its atoms. To find the atomic number of an element, you can do one of the following:
Use the periodic table: The periodic table is a tabular arrangement of elements based on their atomic numbers. Each element is assigned a unique atomic number. You can locate the element you're interested in on the periodic table, and its atomic number will be displayed above or below the element's symbol.
Count the protons: Another way to determine the atomic number is by counting the number of protons in the nucleus of an atom of that element. The atomic number defines the element, so counting the protons will give you the atomic number. This information can be obtained from scientific sources, such as textbooks, scientific databases, or reliable online resources.
Both methods will provide you with the atomic number of an element, allowing you to identify and differentiate it from other elements.