To write the Lewis symbol for any Main-Group element:
1) Remember that Group Number equals Valence Electron Number.
2) Place one dot at a time on the four sides (top, right, bottom, left) of the element symbol.
3) Keep adding dots, pairing them up until you have reach the number of total valence electrons for that element.
How would you represent potassium and bromine using an electron dot diagram? How about KBr?
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Our tutors have indicated that to solve this problem you will need to apply the Lewis Dot Structure concept. You can view video lessons to learn Lewis Dot Structure. Or if you need more Lewis Dot Structure practice, you can also practice Lewis Dot Structure practice problems.