HW308 - of any particular atom shows A) the number of...

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CHEM 1406 Homework #3 name: v due: Mon. 2/11 or Tue. 2/12 1) 1
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What is the symbol for potassium. A)
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PO B)
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Po C)
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P D)
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K E)
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Fe 2)
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Which of the following is a characteristic of the modern periodic table? A)
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A group is a horizontal row on the periodic table. B)
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A period is a column on the periodic table. C)
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The elements in each group have similar chemical properties. D)
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The B groups contain the representative elements. E)
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The A groups contain the transition elements. 3)
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What is the correct answer for the calculation of a volume (in mL) with measured numbers 28.58 16 × 8.02 = ? A)
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0.22 mL B)
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0.223 mL C)
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57 mL D)
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14 mL E)
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14.3 mL 4) 
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How  many protons are in an isotope of sodium with a mass number of 25? A) 
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11  B) 
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14  C) 
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15  D) 
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25  E) 
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32    5) 
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Which of  the  following gives the correct numbers of protons, neutrons, and electrons in a neutral atom of 118 50 Sn?  A) 
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118 protons, 50  neutrons, 118 electrons  B) 
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118 protons,  118 neutrons, 50 electrons  C) 
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50 protons, 68  neutrons, 50 electrons  D) 
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68 protons, 68  neutrons, 50 electrons  E) 
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Unformatted text preview: of any particular atom shows A) the number of isotopes possible. B) a description of the shape of each electron energy level. C) the number of electrons in each energy level. D) a diagram of an atomic nucleus. E) the maximum number of electrons each energy level can hold. 7) What is the element with the electron arrangement 2,8,7? A) Be B) Cl C) F D) S E) Ar 8) The number of valence electrons found in an atom of a Group A element is equal to A) its atomic number. B) its mass number. C) its group number. D) eight. E) eight minus the group number. 9) Which of the following is the correct electron-dot structure for carbon? A) B) C) D) E) 10) Which of the following is a characteristic of nonmetals? A) shiny B) malleable C) good conductors of heat D) low melting points E) good conductors of electricity ....
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This homework help was uploaded on 04/09/2008 for the course CHEMISTRY 1406 taught by Professor Harman during the Spring '08 term at South Plains College.

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HW308 - of any particular atom shows A) the number of...

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