Atomic Number

The atomic number of an element is the number of protons found in the nucleus of an atom. It is represented by the letter Z. The atomic number determines the chemical properties of an element and its place in the periodic table.

Key Points to Remember:

1. The atomic number is unique to each element and is used to identify the element.
2. The atomic number is equal to the number of protons in the nucleus of an atom.
3. The atomic number is represented by the letter Z.
4. The atomic number determines the position of an element in the periodic table.

Study Guide Questions:

1. What is the atomic number of an element?
2. How is the atomic number related to the number of protons in an atom?
3. What is the significance of the atomic number in determining the properties of an element?
4. How is the atomic number represented in the periodic table?

Understanding the concept of atomic number is crucial in comprehending the organization of elements in the periodic table and their chemical behaviors.