The atomic symbol on the Periodic Table of Elements
Chemical Symbols are used to represent elements
Beryllium.
Beryllium.
The chemical symbol is one or two letters that represent an element.
When talking about sets, it is fairly standard to use Capital Letters to represent the set, and lowercase letters to represent an element in that set. So for example, A is a set, and a is an element in A. Same with B and b, and C and c.
The codes on the periodic table that represent an element are called element symbols. These symbols are typically one or two letters that represent the element's name, often derived from the element's English or Latin name.
You could use red marbles to represent protons and blue marbles to represent neutrons, and arrange them in a specific pattern to represent the atomic number of an element. For example, if you use 6 red marbles and 6 blue marbles in a pattern, it could represent carbon(C) which has an atomic number of 6. This visual aid can help your friend understand the concept of atomic number being the number of protons in the nucleus of an atom.
Aluminum
they represent the number of protons the element has and what is their charge
Periods represent the number of shells in a particular element
Chemical symbols represent chemical elements.
It is a pair of curly brackets enclosing a single element. For example {apple}.