Which group of the periodic table contains the halogens?

What is the maximum number of electrons in the 3d subshell?

What is the trend in atomic radius across a period from left to right?

Which element is a metalloid?

What is the trend in ionization energy down a group?

Enzymes are biological catalysts primarily made of:

Which of these elements is an alkaline earth metal?

Which biomolecule is the primary source of stored energy in the human body?

What is the electron configuration of Neon?

Proteins are polymers made up of monomer units called:

Transition metals are characterized by partially filled which subshell?