PERIODIC TABLE OF THE ELEMENTS
- The periodic table is arranged in order of atomic number (# of protons)
- Group number = number of electrons in outer shell
- First shell holds 2 electrons
- Second one holds 8
- Third one holds 8
- Fourth one holds 36 (I think)
- From this, you can work out the electronic configuration. I.e. Oxygen has an atomic number of 6 and it's in group 6, so its configuration is 2, 4
Diatomic elements:
Have No Fear Of Ice Cold Butterbeer (Hydrogen, Nitrogen, Fluorine, Oxygen, Iodine, Chlorine, Bromine)
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