Periodic Trends Multiple Choice v 1.0

Periodic Trends Multiple Choice v 1.0 - Periodic Trends -...

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Periodic Trends - Multiple Choice Review PSI Chemistry Name______________________________________ Shielding, Atomic Number and Size 1) Elements in the modern version of the periodic table are arranged in order of increasing __________. A) oxidation number B) atomic mass C) average atomic mass D) atomic number E) number of isotopes 2) An electron in a(n) __ subshell experiences the greatest effective nuclear charge in a many-electron atom. A) 3f B) 3p C) 3d D) 3s E) 4s 3) A tin atom has 50 electrons. Electrons in the ____ subshell experience the lowest effective nuclear charge. A) 1s B) 3p C) 3d D) 5s E) 5p 4) In which orbital does an electron in a phosphorus atom experience the greatest shielding? A) 2p B) 2s C) 3p D) 3s E) 1s 5) Electrons in the 1s subshell are much closer to the nucleus in Ar than in He due to the larger ______ in Ar. A) nuclear charge B) paramagnetism C) diamagnetism D) Hund's rule E) azimuthal quantum number 6) In which orbital does an electron in a phosphorus atom experience the greatest effective nuclear charge? A) 1s B) 2s C) 2p D) 3s E) 3p 7) Atomic radius generally increases as we move __________. A) down a group and from right to left across a period B) up a group and from left to right across a period C) down a group and from left to right across a period D) up a group and from right to left across a period E) down a group; the period position has no effect 8) Of the following, which gives the correct order for increasing atomic radius for Mg, Na, P, Si and Ar? A) Mg > Na > P > Si > Ar B) Ar > Si > P > Na > Mg C) Si > P > Ar > Na > Mg D) Na > Mg > Si > P > Ar E) Ar > P > Si > Mg > Na 9) The atomic radius of main-group elements generally increases down a group because ________. A) effective nuclear charge increases down a group B) effective nuclear charge decreases down a group C) effective nuclear charge zigzags down a group D) the principal quantum number of the valence orbitals increases E) both effective nuclear charge increases down a group and the principal quantum number of the valence orbitals increases 10) Shielding of the nuclear charge by inner (core) electrons in atoms is __________. A) less efficient than that by valence electrons B) more efficient than that by valence electrons C) essentially identical to that by valence electrons D) responsible for a general decrease in atomic radius going down a group E) both essentially identical to that by valence electrons and responsible for a general decrease in atomic radius going down a group
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11) Which one of the following atoms has the largest radius? A) O
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This note was uploaded on 07/15/2011 for the course CHEM 2045 taught by Professor Gower during the Spring '11 term at University of Florida.

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Periodic Trends Multiple Choice v 1.0 - Periodic Trends -...

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