Periodic Table Multiple Choice Questions

What is the organization of chemical elements based on their atomic number and recurring chemical properties called?

• Atomic arrangement

• Elemental order

• Periodic table

• Chemical matrix

How are elements arranged in the periodic table?

• Alphabetical order

• Increasing atomic mass

• Decreasing atomic number

• Increasing electronegativity

The atomic number of an element is determined by the number of:

• Protons in its nucleus

• Electrons in its nucleus

• Neutrons in its nucleus

• Nucleons in its nucleus

What is the total number of known elements in the periodic table?

• 80

• 92

• 118

• 150

The rows of the periodic table are called:

• Groups

• Families

• Periods

• Series

What are the columns of the periodic table known as?

• Series

• Groups

• Families

• Blocks

Elements in the same group of the periodic table have the same number of:

• Electrons in the outermost energy level

• Protons in the nucleus

• Neutrons in the nucleus

• Valence electrons

Which element has the atomic number 1 and is the lightest element in the periodic table?

• Hydrogen

• Helium

• Carbon

• Oxygen

The chemical symbol “Na” represents which element in the periodic table?

• Neon

• Nickel

• Nitrogen

• Sodium

Elements in Group 18 of the periodic table are known as:

• Halogens

• Noble gases

• Alkaline earth metals

• Transition metals