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Energy levels and valence electrons

This article explores the arrangement of electrons in energy levels and the concept of valence electrons. Electrons are organized in specific energy levels around the nucleus of an atom, with Fluorine exemplifying this arrangement. The first orbit contains 2 electrons, the second has 7, and the third holds none. Valence electrons, found in the outermost energy level, are crucial for chemical bonding. This guide categorizes elements by their group, showing their respective valence electron counts, from alkali metals to noble gases, aiding in understanding their chemical behavior.

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Energy levels and valence electrons

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  1. Energy levels and valence electrons

  2. Electrons and Energy Levels • Electrons are found in energy levels

  3. The energy level diagram for Fluorine * In the first orbit, there are 2 electrons. * In the second orbit, there are 7 electrons. * In the third orbit, there are no electron.

  4. Diagrams for Hydrogen and Carbon Hydrogen Carbon

  5. Valence electrons • The electrons in the outermost energy level of an atom. • The number of valence electrons vary from 1 to 8. • These are the electrons that participate in chemical bonding.

  6. Electron dot diagrams • Only show VALENCE electrons • Element symbol goes in the middle • One dot for each valence electron around the symbol

  7. Know the group know the valence electrons • Elements belonging in Group IA ( H, Li, Na, K ) 1 valence electron for the alkia metals • Elements belonging in Group IIA ( Be, Mg, Ca ) 2 valence electrons for alkaline earth metals • Elements belonging in Group IIIA (B, Al) 3 valence electrons for the boron family • Elements belonging in Group IVA (C, Si) 4 valence electrons for the Carbon group * Elements belonging in Group VA (eg - N, P) 5 valence electrons for elements belonging to Group VA). * Elements belonging in Group VIA (eg - O, S) 6 valence electrons for elements belonging to Group VIA). * Elements belonging in Group VIIA (eg - F, Cl) there are 7 valence electrons for elements belonging to Group VIIA). * Elements belonging in Group VIIIA (eg - He, Ne, Ar) there are 8 valence electrons for elements belonging to Group VIIIA).

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