Question

which information about an atom can a period number give you? (1 point)
○ how many energy levels it has
○ the ionic charge it forms
○ how many bonds it will make
○ the number of valence electrons it has

Explanation:

To solve this, we analyze each option:

• "how many energy levels it has": The period number of an element in the periodic table is equal to the number of electron energy levels (shells) its atoms have. For example, elements in period 3 have 3 energy levels.
• "the ionic charge it forms": The ionic charge is related to the group number (for main - group elements, often related to valence electrons gained or lost), not the period number.
• "how many bonds it will make": The number of bonds an atom makes is related to its valence electrons (and group number in many cases), not the period number.
• "the number of valence electrons it has": The number of valence electrons is related to the group number (for main - group elements, group number = number of valence electrons for groups 1 - 2 and 13 - 18), not the period number.

Answer:

A. how many energy levels it has