If an element is composed of atoms with an atomic number of 6 and a mass number of 14,then a neutral atom of this element contains
A) 6 protons.
B) 8 electrons.
C) 8 neutrons.
D) 6 protons and 8 electrons.
E) 6 protons and 8 neurons.
Correct Answer:
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Q2: The innermost electron shell in an atom
Q5: Isotopes of an element differ in the
Q6: Radioisotopes have unstable
A) ions.
B) nuclei.
C) isotopes.
D) electron
Q8: The atomic number represents the number of
A)electrons
Q9: One mole of any element
A)has the same
Q10: The "atomic weight" of an atom reflects
Q11: Indicate which of these lists contains only
Q14: The nucleus of an atom consists of
A)
Q15: Which element commonly has only a proton
Q15: The mass of an atom is largely
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