Atoms: Protons, Neutrons, Electrons by khayrattee yasser

What is the basic unit of an element?

• nucleus

• molecule

• cell

• atom

Which subatomic particle has a positive charge?

• Electron

• Proton

• Neutron

• Photon

Which subatomic particle has no charge?

• Electron

• Photon

• Proton

• Neutron

Which subatomic particle is not located in the nucleus of an atom?

• electron

• proton

• isotope

• neutron

What is the atomic number of an element?

• Number of neutrons

• Number of protons

• Number of electrons

• Number of isotopes

What is the total number of protons and neutrons in an atom called?

• Atomic number

• Element number

• Mass number

• Nuclear charge

How many protons are present in the nucleus of a carbon atom?

• 4

• 6

• 10

• 8

How many neutrons are present in the nucleus of a helium atom?

• 1

• 2

• 3

• 4

How many electrons can occupy the first shell of an atom?

• 2

• 6

• 8

• 4

What is the mass of a neutron in atomic mass units (amu)?

• 3

• 1

• 2

• 0.5