Question

Use the drop-down menus to complete the statements.

A vertical column of elements in the periodic table is called a .
A horizontal row of elements in the periodic table is called a .
Atoms of elements in the same group have the same .
As you move from left to right on the periodic table, the atomic number .

Answer 1

Answer: the first one is group

2. Period

3. Number of valence elections

4. increases

Answer 2

Step-by-step explanation:

A vertical column of elements in the periodic table is called a group

A horizontal row of elements in the periodic table is called a period

Atoms of elements in the same group have the same number of valence electrons

As you move from left to right on the periodic table, the atomic number increases