Bohr+Model

A Bohr Model depicts the main idea of an atom.

__**How to make a Bohr Model**__:  **This specific example only applies to atoms with 18 electrons or less** 1.Make the nucleus (a circle)

2. Find the number of neutrons by subtracting the atomic number from the atomic mass. (In this case 26.982 - 13, rounding the atomic mass to the nearest tenth)

3. Write the number of protons and neutrons in the nucleus

4. Draw a ring around the nucleus and if the atom has 2 or more electrons put 2 electrons (little circles) on the ring. If you only have 1 electron only put one on the ring. 5. Draw a second ring around that one if you had more than 2 electrons. If you have 8 or more electrons after you take away the two from the other ring then put 8 on the ring. If you have any less, put that many on the ring. 6. Draw a third ring around that one if you had more than 8 electrons after you subtracted 2. If you haver 8 or more electrons after you take away 2 and 8 then put 8 on the ring. If you have any less, put that many on the ring.

