Elements of the periodic table in the same column, also known as a group, have similar chemical properties.
Oxygen is in the 16th column, or the 16th group.
The elements in the 16th group are known as chalcogens.
The chalcogens are oxygen (O, atomic number: 8), sulfur (S, atomic number: 16), selenium (Se, atomic number: 34), tellurium (Te, atomic number: 52), polonium (Po, atomic number: 84), and livermorium (Lv, atomic number: 116), previously known as ununhexium.
Possible answers:
Sulfur (S)
Selenium (Se)
Tellurium (Te)
Polonium (Po)
Livermorium (Lv)
Any three of these will work, since they are all in the same group as oxygen, and therefor have similar chemical properties to oxygen.
Hope this helps!
