1) Which of the following does the nucleus contain? a) protons and electrons b) protons and neutrons c) neutrons and electrons 2) Which of the following statements is correct? a) Protons have a positive charge and neutrons are negative b) Protons have a negative charge and electrons are positive c) Protons have a positive charge and electrons are negative 3) In an atom: a) number of protons = number of electrons b) number of protons = number of neutrons c) number of neutrons = number of electrons 4) A neutron has what charge? a) no charge b) positive c) negative 5) What is the mass of an electron? a) 1 b) -1 c) very small (so small you can ignore it) 6) What is the charge on an electron? a) +1 b) -1 c) 0 7) What is the mass of a neutron? a) 1 b) -1 c) 0 8) What is the charge on a proton? a) +1 b) -1 c) 0

Atomic Structure Review

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