Identify the word that means horizontal rows in periodic table.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Periods.
- Horizontal rows in the periodic table are known as periods.
- There are seven periods in the periodic table, with each one beginning at the far left.
- The periodic table is an arrangement of the elements in order of their atomic numbers, so that elements with similar properties appear in the same vertical column or group.