Question

list 3 elements that are in the same group: a vertical column. what do members of a group have in common?

Explanation:

In the periodic table, elements in the same group have similar chemical properties due to same valence - electron configuration. For example, lithium (Li), sodium (Na), potassium (K) are in Group 1.

Answer:

• Three elements in same group: Lithium, Sodium, Potassium
• Members of a group have same number of valence electrons.