2. Atoms & Elements

Which element belongs to the least reactive group of elements on the periodic table?

Which group of the periodic table contains elements with chemical properties most similar to tellurium (Te)?

Which of the following elements has the same number of energy levels (electron shells) as sodium (Na)?

Which of the following elements is classified as a halogen?

The elements in group 17 of the periodic table are called the:

Which group on the periodic table has the greatest number of valence electrons?

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

Which element has chemical properties most similar to those of fluorine?

Which pair of elements has the most similar chemical properties?

Which element is located in Group 1B and Period 4 of the periodic table?

Which of the following sets of elements are classified as noble gases on the periodic table?

Which pair of elements have chemical properties that are most similar?

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

Which statement best describes the noble gases?

Which of the following best explains why elements on the periodic table are arranged in groups and periods?