Question

the periodic table of the elements organizes elements according to their properties. a section of the periodic table is shown. periodic table of the elements (groups 1 - 6) select the three elements from the choices below that are most similar in chemical behavior.

Explanation:

Step1: Recall periodic - table trends

Elements in the same group of the periodic table have similar chemical behavior because they have the same number of valence electrons.

Step2: Identify groups of given elements

Looking at the periodic - table section provided, Be (beryllium), Mg (magnesium), and Ca (calcium) are all in Group 2.

Answer:

Be, Mg, Ca