Atomic Structure - Atomic Number/Mass: Question Preview (ID: 10723)


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What can be known if only the atomic number of an atom is known?
a) the total number of neutrons in the atom, only b) the total number of neutrons in the atom, only c) the total number of protons and the total number of neutrons in the atom d) the total number of protons and the total number of electrons in the atom
An atom that contains 8 protons, 8 electrons, and 9 neutrons has
a) an atomic number of 9 b) an atomic number of 16 c) a mass number of 17 d) a mass number of 25
What is the total charge of the nucleus of a nitrogen atom
a) +5 b) +2 c) +7 d) +1
What is the total number of neutrons in the nucleus of a neutral atom that has 19 electrons and a mass number of 39?
a) 19 b) 20 c) 39 d) 58
An atom is electrically neutral because the
a) number of protons is equal to the number of electrons b) number of protons is equal to the number of neutrons c) ratio of the number of neutrons to the number of electrons is 1:1 d) ratio of the number of neutrons to the number of protons is 2:1
The number of neutrons in the nucleus of an atom can be determined by
a) adding the atomic number to the mass number b) subtracting the atomic number from the mass number c) adding the mass number to the atomic mass d) subtracting the mass number from the atomic number
What is the atomic number of an element that has 6 protons and 8 neutrons?
a) 6 b) 2 c) 8 d) 14
An atom of helium-4 differs from an atom of lithium-7 in that the atom of helium-4 has
a) one more proton b) one more neutron c) two less protons d) two less neutrons
The atomic number of any atom is equal to the number of
a) neutrons in the atom, only b) protons in the atom, only c) neutrons plus protons in the atom d) protons plus electrons in the atom
In which list are the elements arranged in order of increasing atomic mass?
a) Fe, Co, Ni b) Te, I, Xe c) Cl, K, Ar d) Ne, F, Na
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