ࡱ> %` ubjbjٕ Hg hhhh4< 777h08L8@Ɏ@99999W:W:W:DFFFFFF$ hqjW:S:W:W:W:jhh99;;;;W:^h99D;W:D;;.҃HV^ڈ99 /dO7:.@H0ɎZ:ڈڈ"LW:W:;W:W:W:W:W:jjq;W:W:W:ɎW:W:W:W:@@@d%$@@@%$ ,8hhhhhh What is the smallest particle of an element that retains the properties of that element? What did the following scientists discover / contribute to our knowledge of the atom? Democritus John Dalton J.J. Thompson Ernest Rutherford Neils Bohr James Chadwick Complete the following table: Subatomic ParticleSymbolChargeMassLocation What is the same and what is different about isotopes of the same element? Complete the following table: ElementSymbolAtomic numberAtomic MassMost common isotopeOxygenSulfurSeleniumThe atomic number of an element is the total number of which subatomic particles in the nucleus? What is the mass number of an element? How many protons, electrons, and neutrons does an atom with an atomic number 80 and a mass number 170 contain? Complete the following table: ElementSymbolNumber of protonsNumber of neutronsNumber of ElectronsSodium-24Mercury-201Aluminum-27 How many protons, electrons, and neutrons does an atom with an atomic number 50 and a mass number 120 contain? What does the number 84 in the name Krypton-84 represent? What is its symbol? ElementDensity (g/cm3)Aluminum2.70Zinc7.13Iron7.87Copper8.96Gold19.3 Based on this table, what is the relationship between density and atomic number? Element X has two natural isotopes. The isotope with a mass of 32 amu (32X) has a relative abundance of 29.91%. The isotope with a mass of 33 amu (33X) has a relative abundance of 70.09%. Calculate the atomic mass of this element. An element has three known isotopes. The most abundant isotope has a mass of 45 amu, and a relative abundance of 50%. The second isotope has a mass of 48 amu and a relative abundance of 35%. The third isotope has a mass of 49 amu. Calculate the atomic mass of this element. 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