Question

each period in the periodic table corresponds to a(n) ____.
○ principal energy level
○ suborbital
○ orbital
○ energy sublevel

Explanation:

In the periodic table, elements are arranged in periods (rows). The period number of an element corresponds to the principal energy level of its outermost electrons. For example, elements in period 1 have their outermost electrons in the first principal energy level (\(n = 1\)), elements in period 2 have their outermost electrons in the second principal energy level (\(n=2\)), and so on. A suborbital (like \(s\), \(p\), \(d\), \(f\) sub - orbitals) is a part of a principal energy level. An orbital is a region within a suborbital where an electron is likely to be found. An energy sublevel is another name for a suborbital.

Answer:

principal energy level