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One mole of gallium (6x1023atoms) has a mass of 70 grams, as shown in the periodic table on the inside front cover of the textbook. The density of gallium is 5.9grams/cm3. What is the approximate diameter of a gallium atom (length of a bond) in a solid block of the material? Make the simplifying assumption that the atoms are arranged in a "cubic" array, as shown in the figure. Remember to convert to SI units.

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