Test 6/7 Atomic Structure & Periodicity With Answers - Mrs. Georgia Rutschilling, Mount Notre Dame High School Page 11
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1449. Which of the following best describes why tin considered a metal and carbon a nonmetal de‐
spite being in the same group?
(A) Carbon has smaller atomic radium
(B) The atomic mass of tin is nearly 10 times that of carbon.
(C) Tin has less shielding of its valence electrons and a higher ionization energy.
(D) Tin has more shielding of valence electrons and a lower ionization energy.
(E) Tin has more shielding of its valence electrons and a higher ionization energy.
Electronegativity
50. Which of the following best describes the variation of electronegativity with respect to an ele‐
ment’s position on the periodic table?
(A) Increases across a period; increases down a group.
(B)
Increases across a period; decreases down a group.
(C) Decreases across a period; increases down a group.
Decreases across a period; decreases down a group.
(D)
51. Which of the following groups of elements is arranged correctly in order of increasing elec‐
tronegativity?
(A) B < O < Al < F
(B) Al < B < O < F
(C) B < O < F < Al
F < O < B < Al
(D)
52. The ability of an atom in a molecule to attract electrons is best quantified by the __________.
(A) paramagnetism
(B) diamagnetism
(C) electronegativity
(D) electron change‐to‐mass ratio
(E) first ionization potential
Use the following responses to answer for the next 3 questions.
(A) O
(B) Fe
(C) Rb
(D) Mg
(E) N
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