Question

classify the substances as atomic elements, molecular elements, molecular compounds, or ionic compounds. drag each item to the appropriate bin. view available hint(s)

Explanation:

Step1: Identify Atomic Elements

Atomic elements are substances that consist of single atoms of an element. So, Au (gold) and Cd (cadmium) are atomic elements as they are single atoms of their respective elements.

Step2: Identify Molecular Elements

Molecular elements are made up of molecules containing only one type of atom (diatomic, triatomic, etc.). \( F_2 \) (fluorine, diatomic) and \( H_2 \) (hydrogen, diatomic) are molecular elements.

Step3: Identify Molecular Compounds

Molecular compounds are made up of molecules with two or more different types of atoms. \( NO_2 \) (nitrogen and oxygen) and \( HI \) (hydrogen and iodine) are molecular compounds.

Step4: Identify Ionic Compounds

Ionic compounds are made up of ions (usually a metal and a non - metal). \( MgCl_2 \) (magnesium and chlorine) and \( NaCl \) (sodium and chlorine) are ionic compounds.

Answer:

• Atomic elements: Au, Cd
• Molecular elements: \( F_2 \), \( H_2 \)
• Molecular compounds: \( NO_2 \), \( HI \)
• Ionic compounds: \( MgCl_2 \), \( NaCl \)