Project #78707 - unit 5

  1.  
        1. In which set of elements would all members be expected to have very similar chemical properties?
           
           
           
           
           

        5 points   

        Question 2

        1. Of the elements below, __________ is the least metallic.
           
           
           
           
           

        5 points   

        Question 3

        1. Of the following, which gives the correct order to show decreasing atomic radius for Mg, Na, P, Si and Ar?
           
           
           
           
           

        5 points   

        Question 4

        1. The ground state configuration of fluorine is __________.
           
           
           
           
           

        5 points   

        Question 5

        1. The element that has a condensed electron configuration of [Ar]4s1 is __________.
           
           
           
           
           

        5 points   

        Question 6

        1. The ground state configuration of tungsten is __________.
           
           
           
           
           

        5 points   

        Question 7

        1. In a px orbital, the subscript x denotes the __________ of the electron.
           
           
           
           
           

        5 points   

        Question 8

        1. Which one of the following is the correct mathematical expression for the inverse relationship between the frequency and wavelength of electromagnetic radiation?
           
           
           
           
           

        5 points   

        Question 9

        1. __________ have the lowest first ionization energies of the groups listed.
           
           
           
           
           

        5 points   

        Question 10

        1. The wavelength of light emitted from a traffic light having a frequency of 5.75 × 1014 Hz is __________.
           
           
           
           
           

        5 points   

        Question 11

        1. Which quantum number determines the level of energy of an electron in a hydrogen atom?
           
           
           
           
           

        5 points   

        Question 12

        1. The photoelectric effect is __________.
           
           
           
           
           

        5 points   

        Question 13

        1. Which one of the following atoms has the largest radius?
           
           
           
           
           

        5 points   

        Question 14

        1. Atomic radius generally increases as we move __________.
           
           
           
           
           

        5 points   

        Question 15

        1. Of the following elements, __________ has the most negative electron affinity.
           
           
           
           
           

        5 points   

        Question 16

        1. According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the __________ of an electron.
           
           
           
           
           

        5 points   

        Question 17

        1. Which one of the following is NOT a valid value for the magnetic quantum number of an electron in a 4d subshell?
           
           
           
           
           

        5 points   

        Question 18

        1. Of the choices below, which correctly orders the successive values for first ionization energies in a range from largest to smallest?
           
           
           
           
           

        5 points   

        Question 19

        1. Which one of the following configurations depicts an excited oxygen atom?
           
           
           
           
           

        5 points   

        Question 20

        1. Of the elements below, __________ has the highest melting point.
           
           
           
           
           

           

           

           

          In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 2.01 Å (Li–F), 2.82 Å (Na-Cl), 3.30 Å (K–Br), and 3.67 Å (Rb–I), respectively.

          1. Predict the cation–anion distance using the values of ionic radii given in Figure 7.7, on page 257 in the textbook.

          2. Calculate the difference between the experimentally measured ion–ion distances and the ones predicted from Figure 7.7. Assuming we have an accuracy of 0.04 Å in the measurement, would you say that the two sets of ion–ion distances are the same or not? Why, or why not?

          3. What estimates of the cation–anion distance would you obtain for these four compounds using bonding atomic radii? Are these estimates as accurate as the estimates using ionic radii? Explain your answer.

           

           

           

Subject Science
Due By (Pacific Time) 08/10/2015 07:00 pm
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