BOHR MODELS

HELIUM STATS

• Atomic number 2
• Mass number 4
• Protons 2
• Electrons 2
• Neutrons 2

HELIUM STATS

• Group 8, Period 1
• 1 shell with two valence electrons
• It's not reactive

To create a Bohr model for Helium, you must first find out its stats. Then you find its protons, neutrons, and electrons. Because Helium is a special element it only has one shell, even though it's in group 8, and it has two valence electrons. Because its atomic number is 2 it only has 2 electrons.

BORON STATS

• Atomic number 5
• Mass number 11
• Protons 5
• Electrons 5
• Neutrons 6

BORON STATS

• Group 3, period 2
• 2 shells, 3 valence electrons
• Generally unreactive

To create a Bohr model for Boron, find the protons, weight, neutrons and electrons. Because Boron is in group 3 it has three shells, it also has 5 electrons and 3valence electrons.

LITHIUM STATS

• Atomic number 3
• Mass number 7
• Protons 3
• Electrons 3
• Neutrons 4

LITHIUM STATS

• Group 1, period 2
• Two shells, 1 valence electrons
• Its reactive

To create the Lithium Bohr you will find that it's in group one and period two. Its atomic number is 3 so it has 3 electrons. It follows the 2,8,8 rule so two electrons go in the first shell. The final valence electron is in the third shell.