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19 March, 16:23

Which element has exactly five electrons in the highest principal energy level (the outer shell) ?

a. B

b. Ba

c. P

d. Mn

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Answers (1)
  1. 19 March, 20:22
    0
    Boron (B) has 3 electrons in the outer shell.

    Barium (Ba) has 2 electrons.

    Phosphorus (P) has 5 electrons.

    Manganese (Mn) has 2 electrons.

    The answer is C) P (phosphorus).
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