Answer
a. The green box
b. The red box
c. The yellow box
d. The blue box
Work Step by Step
To answer the questions in this problem, we want to take a look at the front cover of our book at the periodic table there.
a. The green box corresponds to the element magnesium, atomic number 12. Magnesium is located in group 2A or 2 on the periodic table called the alkaline earth metals. The alkaline earth metals lie on the metal side of the periodic table and form 2+ cations, which corresponds to their group number. These metals combine readily with oxygen in a one-to-one ratio.
b. The red box corresponds to the element potassium, atomic number 19. It is located in group 1A or 1 on the periodic table called the alkali metals. These elements lie on the metal side of the periodic table and form 1+ cations, which corresponds to its group number. They combine with oxygen in a two-to-one ratio.
c. The yellow box corresponds to the element titanium, atomic number 22. It is located in group 4B or 4 on the periodic table. This element lies on the metal side of the periodic table and forms 4+ cations, which corresponds to its group number. The elements in this group combine with oxygen in a one-to-two ratio.
d. The blue box corresponds to the element aluminum, atomic number 13. It is located in group 3A or 13 on the periodic table. This element lies on the nonmetal side of the periodic table and forms 3- anions. The elements in this group combine with oxygen in a two-to-three ratio.
