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• Not really.
• Something about the atoms and ions?﻿
• Come on down.﻿
• Do you understand?﻿
• Hey Nick, do you know what Ms Ong ﻿ is teaching recently?
• ﻿oh ya I understand, that's a pretty easy topic to me.
• I'm very confused with the electrons ﻿
• Always remember this formula: 2,8,8.﻿ That's the maximum electrons allowed. The first shell allows maximum 2 electrons, the 2nd shell allows maximum of 8. Same as the third shell, it's max is 8.
• ﻿In an atom there is this particle called the electrons. They are arranged in electon shells.
• Ooh , now I understand!﻿ We need to fill up as much possible for the first two shells.
• Si﻿
• ﻿Let's take silicon as an example.
• ﻿Silicon has 14 electrons. So the configuration would be 2,8,4.
• What about the stable stuff?﻿
• I heard my teacher said that negative ion is called﻿ anion.
• Ahhh, I understand now.﻿
• Si﻿
• In this case, we need to gain 4 more electrons this is then called a negative ion.  ﻿
• If there is a 4 on the 3rd shell, the best way is to add 4 more. If 4 or more, add to the difference. If there﻿ is lesser, deduct to the difference.
• So that means those in group 0 of the periodic table are stable?﻿
• I see.﻿
• Si﻿
• Stable electric configuratation﻿ is for 2 or 2,8 or 2,8,8.
• They usually do not need to add or deduct. They are only for the noble gases.
• Exactly!﻿
• Thanks for giving me a deeper understanding Nick.﻿
• You really made me know what does ions and atom mean.
• ﻿No problem Pete!
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