If the average atomic mass of boron is 10811 det

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Unformatted text preview: ss of boron11. Isotope % Abundance Atomic Mass 10 19.61 10.013 11 80.39 ? B B [ ( )] [ ( )] 10.811 = 10.013 amu 0.1961 + x amu 0.8039 x = 11.01 amu 9. Predict the charge for ions from the following elements, based on their positions on the periodic table. a) S, sulfur. Group 6 – 8 = -2 b) Br, bromine. Group 7 – 8 = -1 c) Ba, barium. Group 2 = +2 d) Ga, gallium. Group 3 = +3 Chapter 4 Homework Page 2 of 2...
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