atomic structure and the periodic table, Study notes of Chemistry

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ABLE Atoms Isotopes Compounds Equations Contained in the nucleus are the protons and neutrons. Moving around the nucleus are the electron shells. They are negatively charged. proton 1 +1 neutron 1 0 electron Very small -1 o>» Overall, atoms have no charge; they have the Z sane number of protons as electrons. \* 6 a > et | aul number ‘of protons. 40 electrons. an isotope is an element with the same number Ins. . They have the same sionnic umnba but different mass number. a compound is when two or more elements a emically joined. Examples of compounds are carbon dioxide and Sareea oxide. Some examples o| formulas are CO2, NaCl, HCl, H20, a To calculate the relative atomic mass, use the following equation: relative atomic mass (Ar) = sum of (isotope abundance * isotope mass number) sum of abundances of all isotopes Scanned with CamScanner