Which of the following elements has chemical properties most similar to lithium?

Which group on the periodic table is considered the most reactive?

Elements that have complete valence electron shells are mostly found in the:

Which of the following elements is a semimetal found in group 8A of the periodic table?

Which group on the periodic table contains the alkaline earth metals?

Which group of elements on the periodic table is characterized by having few valence electrons and is known for conducting heat and electricity?

How many elements are classified as halogens on the modern periodic table?

Cu, Ag, and Au are all elements found in which group of the periodic table?