An atom has 11 protons and 12 neutrons. What is its mass number?, A) 11, B) 12, C) 23, D) 1, An atom has a mass number of 40 and an atomic number of 18. How many neutrons does it have?, A) 18, B) 22, C) 40, D) 58, If an atom has 15 protons, its atomic number is, A) 7, B) 15, C) 30, D) 45, Which statement correctly describes isotopes?, A) Same protons, different neutrons, B) Different protons, same neutrons, C) Same protons, same neutrons, D) Different protons, different neutrons, Two atoms have the same atomic number but different mass numbers. These atoms are:, A) Ions, B) Elements, C) Isotopes, D) Neutrons, Which particle determines the atomic number of an element?, A) Electron, B) Neutron, C) Proton, D) Nucleus, An element has an atomic number of 12. How many protons are present in one atom of this element?, A) 6, B) 10, C) 12, D) 24, An atom has 8 protons, 8 neutrons, and 8 electrons. What is its mass number?, A) 8, B) 16, C) 24, D) 0, Which pair represents isotopes of the same element?, A) 6p, 6n and 7p, 6n, B) 8p, 8n and 8p, 10n, C) 10p, 10n and 11p, 10n, D) 12p, 12n and 13p, 13n, An atom has 19 protons and a mass number of 39. The number of neutrons is:, A) 19, B) 20, C) 39, D) 58

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