* Atomic Number: The atomic number of an element tells you the number of protons in its nucleus. Boron's atomic number is 5, meaning it has 5 protons.
* Neutrality: Atoms are electrically neutral. This means they have an equal number of protons (positive charge) and electrons (negative charge).
* Electrons: Since boron has 5 protons, it also has 5 electrons.
Important Note: The mass number (11 in this case) tells you the total number of protons and neutrons in the atom's nucleus. It doesn't directly affect the number of electrons.
