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How many electrons can be accommodated in the fourth shell of an atom?


A) 2
B) 8
C) 18
D) 32

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What is the name given to the lowest possible energy state of an electron?


A) the zeroth state
B) the bottom state
C) the ground state
D) none of these

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What are the elements in the "B" columns of the periodic table called?


A) main group elements
B) inner transition elements
C) transition elements
D) none of these

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Which language is the word "atom" derived from?


A) Arabic
B) Greek
C) Hebrew
D) Latin

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When a strong magnet is brought near a sample that contains both iron and sulfur, the iron and the sulfur are not separated from one another. Which type of matter is this sample?


A) It is a compound.
B) It is a homogeneous mixture.
C) It is a heterogeneous mixture.
D) The information given is not enough to answer this question.

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How many elements occur naturally as diatomic molecules?


A) 0
B) 5
C) 6
D) 7

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If you could line up atoms of lead-208, approximately how many atoms are required to form a line 1 inch long? Note that an atom of lead-208 has a diameter of 1.6 x 10-10 m.


A) 82
B) 208
C) 8.2 x 107
D) 1.6 x 1012

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Which of the following is true of the ionization energy of elements?


A) Ionization energy generally decreases as we move from left to right in the periodic table.
B) Ionization energy generally increases as we move from top to bottom in the periodic table.
C) Ionization energy generally increases as we move from left to right in the periodic table.
D) Ionization energy generally remains the same as we move from top to bottom in the periodic table.

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Which column of the periodic table contains the alkali metals?


A) 1A
B) 2A
C) 7A
D) 8A

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Which of the chemical elements has the highest ionization energy?


A) F
B) H
C) He
D) U

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Which of the following defines the atomic number of an atom?


A) the number of protons in the atom
B) the number of neutrons in the atom
C) the total number of protons and neutrons in the atom
D) the total number of protons, neutrons, and electrons in the atom

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What is the mass number of an atom that is made up of 27 protons, 32 neutrons, and 27 electrons?


A) 89
B) 59
C) 32
D) 27

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What is the ionization energy of an atom?


A) the energy released when an atom gains an electron
B) the energy released when an atom loses an electron
C) the energy required to add an electron to an atom
D) the energy required to remove an electron from an atom

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Which of the following statements correctly describes ionization energies?


A) Ionization energies are always positive as the process of electron removal is always endothermic.
B) Ionization energies generally increase as we go from top to bottom within a column of the periodic table.
C) Ionization energies are always positive as the process of electron removal is always endothermic and ionization energies generally increase as we go from top to bottom within a column of the periodic table.
D) Ionization energies are neither positive nor do they generally increase.

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Which of the following contains two species which are a pair of isotopes?


A) 14C and 14N
B) 12C and 13C
C) both 14C and 14N and 12C and 13C
D) neither 14C and 14N or 12C and 13C

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Which of the following is true when comparing two electrons that are in different shells of an atom?


A) The electron in the higher-numbered shell is closer to the nucleus and is easier to remove.
B) The electron in the higher-numbered shell is closer to the nucleus and is harder to remove.
C) The electron in the higher-numbered shell is farther from the nucleus and is easier to remove.
D) The electron in the higher-numbered shell is farther from the nucleus and is harder to remove.

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Which element is currently used to define the atomic mass unit?


A) hydrogen-1
B) carbon-12
C) oxygen-16
D) none of these

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What is the approximate mass of a proton?


A) 12 g
B) 1 g
C) 12 amu
D) 1 amu

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Which element has the following ground-state electron configuration? Which element has the following ground-state electron configuration? A) Al B) Na C) B D) Ga E) none of these


A) Al
B) Na
C) B
D) Ga
E) none of these

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Which of the following statements is true of the nucleus of an atom?


A) The nucleus occupies only a tiny fraction of the total volume of the atom, and most of the mass of the atom is concentrated in its nucleus.
B) The nucleus occupies a large fraction of the total volume of the atom, and most of the mass of the atom is concentrated in the region surrounding the nucleus.
C) The nucleus occupies a large fraction of the total volume of the atom, and most of the mass of the atom is concentrated in its nucleus.
D) The nucleus occupies only a tiny fraction of the total volume of the atom, and most of the mass of the atom is concentrated in the region surrounding the nucleus.

Correct Answer

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Showing 81 - 100 of 134

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