Question

Where are elements with the same characteristics located on the periodic table?

a) Group; period; energy level; next to each other on the same row.
b) Row; group; atomic number; opposite sides of the table.
c) Period; group; valence electrons; same column.
d) Energy level; atomic mass; period; diagonal arrangement.

Answer 1

Elements with the same characteristics are found in groups, which consist of elements with similar properties located in the same vertical column on the periodic table. Groups indicate elements with the same number of valence electrons, and periods represent the energy level of these electrons. The correct answer to the question is closest to option (c): Period; group; valence electrons; same column.

Step-by-step explanation:

Elements with the same characteristics are located in groups on the periodic table. A group is a vertical column that contains elements with similar chemical properties.

For example, Group 1 elements are known as the alkali metals, and they all have one valence electron. Similarly, Group 17 contains the halogens, which are elements with seven valence electrons and are very reactive. The periods, or horizontal rows, indicate the energy level of the valence electrons. As an example, elements in period 3, like sodium (Na), will have their valence electrons in the third energy level.