Phosphorus Has an Atomic Number of 15, So What Is

question 44

Multiple Choice

Phosphorus has an atomic number of 15, so what is the distribution of its electrons?

• A) The first energy level has 2, the second has 8, and the third has 5.
• B) The electron arrangement cannot be determined from the atomic number alone.
• C) The first energy level has 2 and the second has 13.
• D) The first energy level has 8 and the second has 7.
• E) The first, second, and third energy levels have 5 electrons each.

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