Atomic Structure and Models Quiz

In a cathode ray tube

• protons pass from the anode to the cathode.

• protons pass from the cathode to the anode.

• electrons pass from the anode to the cathode.

• electrons pass from the cathode to the anode.

Which of the following scientists developed the nuclear model of the atom?

• John Dalton

• J. J. Thomson

• Henry Moseley

• Robert Millikan

• Ernest Rutherford

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Rutherford's experiment with alpha particle scattering by gold foil established that

• electrons have a positive charge.

• atoms are made of protons, neutrons, and electrons.

• protons are 1840 times heavier than electrons.

• protons are not evenly distributed throughout an atom.

• electrons have a negative charge.

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Atoms of the same element with different mass numbers are called

• neutrons.

• ions.

• isotopes.

• allotropes.

• chemical families.

An atom of the isotope ¹³⁷Ba consists of how many protons (p), neutrons (n), and electrons (e)?

• 56 p, 81 n, 56 e

• 56 p, 137 n, 56 e

• 137 p, 81 n, 56 e

• 56 p, 56 n, 56 e

• 81 p, 56 n, 81 e

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Complete the following chart, in order from left to right. Table with columns: Isotope, Mass Number, Protons, Neutrons, Electrons. Row: 14N

• 14, 7, 7, 7

• 7, 14, 7, 7

• 7, 7, 7, 7

• 14, 7, 14, 7

• Some other answer

The elements in a column of the periodic table are known as

• a group.

• a period.

• noble gases.

• metalloids.

• nonmetals.

Which of the following elements is most likely to be a good conductor of electricity?

• N

• S

• Cl

• He

• Fe

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Which one of the following is an ion?

• NaCl

• none of the above

• B3+

• He

• 14C

Which one of the following elements is most likely to form a 2+ ion?

• fluorine

• sodium

• calcium

• carbon

• oxygen

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