For example, the atomic number of chlorine is 17. Every chlorine atom has 17 protons and 17 electrons. It has 17 positive charges and 17 negative charges, meaning that it is neutral overall. Atoms ...

For example, Oxygen has an atomic number of 8 because it has 8 protons in its nucleus. Atomic Mass: The atomic mass of an atom is the sum of the protons and neutrons in its nucleus.

Neutrons are neutral, as its name implies. A stable atom has a net charge of 0. In other words, it has an equal number of protons and electrons. The positive protons cancel out the negative electrons.

Note: The picture shows a simple model of the carbon atom. It illustrates some basic information like the number of protons and neutrons in the nucleus. It also shows that the number of electrons is ...

Atomic number: The number of protons in an atom's nucleus is referred to as the atomic number of that element. The number of protons defines what element it is and determines its chemical behavior.

For example, the atomic number of sodium is 11. Every sodium atom has 11 protons and 11 electrons. It has 11 positive charges and 11 negative charges.