What is the Bohr model for neon?

1 Answer
May 26, 2014

Two electron shells surrounding the nucleus, containing 2 electrons in the n=1 shell and 8 electrons in the n=2 shell.

Bohr's model of the atom described the atom as a series of energy levels called principle quantum shells, at progressively greater distance from the nucleus. The first of these shells is able to hold up to two electrons, then it is full and electrons begin to fill the next shell etc. This structure of shells is reflected in the structure of the periodic table.

Starting with the atomic number for an atom, we know the number of protons in the nucleus, which will be the same as the number of electrons (for an atom, not an ion). We start by putting electrons in to innermost (n=1) shell, then when this is full, the next shell out can accept up to 8 electrons. After that the situation gets a little more complicated as the n=3 energy level can hold up to 18 electrons, but accepts only 8 of these before the n=4 starts to fill...