A neutral atom with an atomic number of 15 will have ____ electrons in its outermost energy level.

Question

Quizplus · Accepted Answer

The atomic number of an element indicates the number of protons in its nucleus, and in a neutral atom, the number of protons equals the number of electrons. For an element with atomic number 15 (phosphorus), its electron configuration is 2, 8, 5. Thus, there are 5 electrons in its outermost energy level.

A Neutral Atom with an Atomic Number of 15 Will