Question: 195 What element is represented by X in the atomic symbol notation 78 X? Iridium Platinum Palladium Selenium Magnesium QUESTION 13 Which of the

195 What element is represented by X in the atomic symbol notation

195 What element is represented by X in the atomic symbol notation 78 X? Iridium Platinum Palladium Selenium Magnesium QUESTION 13 Which of the following is a nonmetal? Lithium, Li, Z = 3 Bromine, Br, Z = 35 Mercury, Hg, Z = 80 Bismuth, Bi, Z= 83 Sodium, Na, Z = 11

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