Exploring Atomic Structure Quiz

Who is known as the "father of modern atomic theory" for proposing that atoms are indivisible and indestructible particles?

• J.J. Thomson

• John Dalton

• Ernest Rutherford

• Niels Bohr

Which scientist discovered the electron using experiments with cathode rays?

• Ernest Rutherford

• J.J. Thomson

• James Chadwick

• Niels Bohr

Rohan is building a simple model of an atom for his science project. He wants to label the charge of each subatomic particle. What is the charge of a proton that Rohan should write on his model?

Which subatomic particle is found in the nucleus and has no electrical charge?

• Electron

• Proton

• Neutron

• Positron

Arnav is building a model of an atom for his science project. He wants to know the maximum number of electrons he can place in the second shell (L shell) of his model. What is the maximum number of electrons that can be accommodated in the second shell?

• 2

• 4

• 8

• 18

Avni is reading about different models of the atom in her science textbook. She learns about a model where electrons revolve around the nucleus in fixed orbits, similar to how planets orbit the sun. Which scientist proposed this planetary model of the atom?

• J.J. Thomson

• Ernest Rutherford

• Niels Bohr

• James Chadwick

What is the atomic number of an element?

• Number of neutrons in the nucleus

• Number of protons in the nucleus

• Number of electrons in the outermost shell

• Total number of protons and neutrons

Dia is learning about why different elements react differently in chemistry class. She wonders which subatomic particle is responsible for determining the chemical properties of an element. Which one is it?

• Neutron

• Proton

• Electron

• Positron

What is the mass number of an atom that has 11 protons, 12 neutrons, and 11 electrons?

• 11

• 12

• 22

• 23