MCQs on Periodic Table Concepts

The modern periodic table is primarily organized by:

• Atomic mass

• Atomic number

• Number of neutrons

• Number of isotopes

What is the primary use of the periodic table?

• To calculate the weight of atoms

• To predict chemical properties of elements

• To measure the temperature of compounds

• To identify isotopes of elements

What does the term 'periodicity' refer to in the context of the periodic table?

• The arrangement of elements by atomic mass

• The total number of electrons in an atom

• The repeating patterns of chemical properties

• The number of protons in an atom

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

• Atomic mass

• Number of energy levels

• Chemical properties

• Physical appearance

Which of the following is a characteristic of nonmetals?

• Malleable

• Good conductor of electricity

• Brittle

• High melting point

Metals are generally:

• Dull and brittle

• Poor conductors of heat and electricity

• Malleable and ductile

• Non-reactive

The electron configuration of an atom provides information about:

• The mass of the atom

• The number of neutrons in the nucleus

• The arrangement of electrons in energy levels

• The number of isotopes of the element

Why is electron configuration important?

• It determines the element's density

• It explains the atomic mass of the element

• It determines chemical reactivity and bonding

• It identifies isotopes

What are valence electrons?

• Electrons in the innermost energy level

• Electrons in the nucleus

• Electrons in the outermost energy level

• Electrons that do not participate in bonding

Which of the following is true about metals?

• They tend to gain electrons.

• They tend to lose electrons.

• They do not gain or lose electrons.

• They can either gain or lose electrons.