Test Review List 'Atomic Structure' 0001
Chemistry: Atomic Structure, Test Review Listatom = Greek “indivisible”protons:atomic number, determine identity of an atom(+) charge, mass of ~1 a.m.u., in nucleusneutrons:(0) charge, mass of ~1 a.m.u., in nucleusmass number of an atom = number of protons + number of neutronselectrons:(-) charge, mass of ~0 a.m.u., orbit nucleuscan be gained or lost by an atomgained: electrons > protons anion (e.g., Cl1-, O2-)lost: electrons < protons cation (e.g., Na1+, Ca2+)located in Energy Levels (1, 2, 3, etc.)when given energy, electrons can jump up to another levelelectrons will fall back down to original level by giving up thatenergy; we call this energy lighttravel in orbitals (1s, 2s, 2p, 3s, etc.)electron configuration of an atom of an elementisotopesaverage atomic mass = (mass A)(% abun. A) + (mass B)(% abun. B) + …where A and B represent different isotopes of an elementtheory of the atomGreeks, Dalton, Thomson, Rutherford, Bohr, Quantum Mechanical Modelisotope notationlight: velocity c, frequency, wavelength, energy Ec = ?f, where c = 3x108 m/sE = hf, where h = 6.6 x 10-34 J/HzWhat determines the identity of an atom?What are the a) charge, b) approximate mass, and c) location within the atom of protons, neutrons, and electrons?What is the mass number and how do you find it?What is the ion symbol for sulfur (S) when its outer shell of electrons is full? How about for barium (Ba)? What would the names of these ions be?Write the longhand and shorthand electron configuration for a) nickel (Ni)b) phosphorus (P)The element Chemistrium (Ch) has 2 varieties, Ch-110 and Ch-112. Ch-110 has a % abundance of 73%. Find the average atomic mass of Ch.Write out the isotope notation for a Sr-90 atom.Name the person or group credited with the following ideas / experiments.gold foil experimentquantum theoryindivisible particlesfirst comprehensive theory of the atomplum pudding modelWhat happens to an electron in an atom if it absorbs “just the right amount of energy”? Then what happens? A quantum of light has 4.2 x 10-23 J of energy. Find the:a) frequency of the lightb) wavelength of the light ................
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