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Unformatted text preview: The particle that defines the identity of an atom is the _____________. (shown on the periodic table) Every hydrogen atom has ___ proton. Every magnesium atom has ___ protons. Any atom that has 23 protons is _________________. Any atom that has 92 protons is _________________. The mass of an atom is mostly from the ___________ and ____________. Find O on the periodic table. It’s mass is ______ amu. It has ___ protons. It must have ___ neutrons. Electrically neutral atoms (as opposed to ions) have one electron for every proton. Fill in this chart for these neutral atoms: Atom Mass protons neutrons electrons He Si Be H Rn Ar F Pb If the mass is not close to a whole number, it is because the atom has several _____________. These are atoms with the same number of ___________ but different numbers of _____________. Chlorine has two isotopes: Cl-35 ( ___ p+ & ___ n ° ) and Cl-37 ( ___ p+ & ___ n ° )....
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This note was uploaded on 02/12/2012 for the course CHEMI 0043 taught by Professor Kaisasantos during the Fall '11 term at Pontificia Universidad Catolica Madre y Maestra.
- Fall '11