Ap Chemistry Worksheet - Dr. Kathleen Gorski, Wilbraham And Monson Acaddemy Page 3
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242.3 Four of the boxes in the following periodic table are colored. Which of these are metals and
which are nonmetals? Which one is an alkaline earth metal? Which one is a noble gas?
[Section 2.5]
2.5 Which of the following diagrams most likely represents an ionic compound, and which
represents a molecular one? Explain your choice. [Sections 2.6 and 2.7]
2.7 Five of the boxes in the following periodic table are colored. Predict the charge on the ion
associated with each of these elements. [Section 2.7]
2.15 How did Rutherford interpret the following observations made during his α-particle
scattering experiments? (a) Most α particles were not appreciably deflected as they passed
through the gold foil. (b) A few particles were deflected at very large angles. (c) What
differences would you expect if beryllium foil were used instead of gold foil in the α-particle
scattering experiment?
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2.18 An atom of rhodium (Rh) has a diameter of about 2.7 x 10
cm. (a) What is the radius of a
rhodium atom in angstroms (Å) and in meters (m)? (b) How many Rh atoms would have to be
placed side by side to span a distance of 6.0 µm? (c) If you assume that the Rh atom is a
3
sphere, what is the volume in m
of a single atom?
2.26 Fill in the gaps in the following table, assuming each column represents a neutral atom.
65
Symbol
Zn
Protons
38
92
Neutrons
58 49
Electrons
38 36
Mass no.
81 235
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