Chemistry, 26.10.2020 01:00 lazavionadams81
An atom has a mass number of 19 and an atomic number of 9. What element is it? What is its symbol? How many protons, neutrons, and electrons does it have?
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Nickel crystallizes in the face-centered cubic (fcc) lattice. the density of the metal is 8902 kg/m3. calculate the radius of a nickel atom.
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Will mark brainliest how many electrons can be held in the energy level n = 4?
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An atom has a mass number of 19 and an atomic number of 9. What element is it? What is its symbol? H...
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