Question

Rules: First layer (shell) always contains 2 electrons all other levels most of the time

will contain 8 electrons.
Now your turn. First, look at your periodic table and determine the number of protons
and neutrons. Then fill in the number of protons (P) and the number of neutrons
(N). Lastly, add the correct number of electrons in each layer (shell) according to the
rules. (Hint: for a neutral atom the number of protons = the number of electrons)
N
Hydrogen Atom
Boron Atom
N
Argon Atom
Fluorine Atom
Neon Atom
Oxygen Atom
Sodium Atom
Calcium Atom
Carbon Atom
2

Answer 1

Protons and neutrons can be determined by the atomic number and atomic mass, respectively. Electrons are filled in shells according to certain rules.

Step-by-step explanation:

The number of protons (P) in an atom is determined by its atomic number, which can be found on the periodic table. The number of neutrons (N) can be calculated by subtracting the atomic number from the atomic mass. For example:

• Hydrogen Atom: 1 proton, 0 neutrons, and 1 electron in the first shell
• Boron Atom: 5 protons, 6 neutrons, and 5 electrons (2 in the first shell and 3 in the second shell)
• Argon Atom: 18 protons, 22 neutrons, and 18 electrons (2 in the first shell, 8 in the second shell, and 8 in the third shell)

Learn more about Atomic structure and electron configuration