8.5AB Atoms, Protons and Electrons

The three smaller components that make up atoms are -

• neutrons, protons and ions.

• neutrons, electrons and protons.

• protons, ions and electrons.

• electrons, neutrons and ions.

Which of the following lists the two particles found together inside the nucleus of an atom?

• Photons and ions

• Neutrons and electrons

• Protons and neutrons

• Electrons and protons

A neutral atom has an equal number of positive and negative charges. If a neutral fluorine atom has 9 protons and 10 neutrons, how many electrons will it have?

• 10

• 9

• 8

• 7

If an atom has six positively charged subatomic particles, which of the following must it also have in order to become a neutral atom?

• Twelve protons

• Six neutrons

• Three electrons

• Six electrons

The nucleus of the atom contains 8 protons and 9 neutrons. The atom is electrically neutral. How many electrons does this atom have?

• 1

• 8

• 9

• 15

If an atom has 17 protons, 18 neutrons, and 17 electrons, what is the mass of this atom? (Select the best POSSIBLE answer)

• 17

• 18

• 32

• 52

Which of the following lists the two subatomic particles that contribute the most to the mass of an atom?

• Protons and electrons

• Protons and neutrons

• Neutrons and electrons

• Electrons and ions

What is the name for the type of subatomic particle that is electrically neutral and found in the nucleus of an atom?

• Proton

• Neutron

• Ion

• Electron

Which subatomic particles(s) would be found orbiting around the nucleus?

• Electrons and protons

• Neutrons only

• Protons and neutrons

• Electrons only

An atom of a certain number has 36 protons, 36 electrons, and a mass number of 84. How many neutrons does it have?

• 36

• 48

• 72

• 84