Atomic Structure

• Isotopes are different atoms with the same number of protons & electrons but different numbers of neutrons
• Oxygen only contains one single type of element while air is a mixture of elements and compounds
• Chemical reactions only involve electrons, therefore isotopes have similar chemical properties
• Isotopes have different nucleon numbers, resulting in different masses
• Physical properties are affected by the element due to different nucleon numbers in isotopes
• Element Sulfur has atomic number 16
• Element Nitrogen has atomic number 7
• Element Calcium has atomic number 20
• Element Fluorine has atomic number 9
• Element Sodium has atomic number 11
• Element Silicon has atomic number 14
• Element Lithium has atomic number 3
• Element Carbon has atomic number 6
• Element Neon has atomic number 10
• Element Boron has atomic number 5
• Element Helium has atomic number 2
• Element Phosphorus has atomic number 15
• Element Potassium has atomic number 19
• Element Aluminum has atomic number 13
• Element Chlorine has atomic number 17
• Element Argon has atomic number 18
• Element Hydrogen has atomic number 1
• Element Oxygen has atomic number 8
• Element Magnesium has atomic number 12
• Element Beryllium has atomic number 4