MCQ Quiz: Atomic Structure

What is the central part of an atom called?

• Electron shell

• Nucleus

• Proton

• Neutron

What particles are found in the nucleus of an atom?

• Protons and electrons

• Electrons and neutrons

• Protons and neutrons

• Only neutrons

Which subatomic particle has a negative charge?

• Proton

• Neutron

• Electron

• Nucleus

What is the relative mass of a proton?

• 0.0005

• 1

• 0

• 2

What is the relative charge of a neutron?

• +1

• -1

• 0

• +2

What does the atomic number (proton number) of an atom represent?

• The number of protons

• The number of neutrons

• The number of electron shells

• The total number of protons and neutrons

What is another name for the mass number of an atom?

• Proton number

• Electron number

• Nucleon number

• Shell number

Which of the following is true about the mass number?

• It is the total number of electrons in an atom

• It is the number of protons and neutrons

• It is always equal to the proton number

• It is the number of electron shells

What is the electronic configuration of an atom with a proton number of 11?

• 2,8

• 2,8,1

• 2,6,3

• 2,4,5

How many electrons does an atom of magnesium (proton number 12) have in its outer shell?

• 2

• 6

• 8

• 12