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Electron Configuration

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  • Choose the correct answer
    Aluminum
  • How many valence electrons in 1s2 2s2 2p4
    6
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    Hydrogen
  • in which row is this element : 1s2 2s2 2p6 3s1
    Row 3
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    Silicon
  • In which group is this element : 1s2 2s2 2p5
    Group 7
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    Magnesium
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    Potassium
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    Sodium
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    Chlorine
  • 1s2 2s2 2p6
    Neon
  • How many valence electrons in 1s2 2s2 2p6 3s2
    2
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