18 - -Ionic bonding is where one atom transfers electrons to another atom and the resultant oppositely charged particles “stick together” o

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Chemistry notes 9/18/07 - Density of nucleus is such that a pea-sized sample of nuclear matter would weigh 250 million tons - Atoms that have the same number of protons, but different number of neutrons are isotopes o All atoms of a given element have the same number of protons - Almost all of the mass of an atom is contributed by the protons and neutrons in its nucleus o Proton and neutron each have a mass of approximately 1 amu - Metalloids, or semi-metals, are elements having some metal-like properties and some non-metal properties and lie along the interface between the metal & non- metal regions in the periodic table
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Unformatted text preview: -Ionic bonding is where one atom transfers electrons to another atom and the resultant oppositely charged particles “stick together” o Positively charged ions (cations) and negatively charged ions (anions) o The oppositely charged ions tend to cluster, and stay, together and an ionic bond has been formed -Covalent bonds have the following forces o Repulsion between nuclei o Repulsion between electrons o Attraction between nuclei and electrons-Polyatomic ions are groups of covalently bonded atoms that will gain/lose electrons (as a whole) and could thus possess a non-zero charge-...
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This note was uploaded on 06/05/2008 for the course CHEM Gen Chem I taught by Professor Halpin during the Spring '08 term at NYU.

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