3. Atomic Structure of Matter

3. Atomic Structure of Matter - 1 Å = 10-10 m • Atoms...

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Atomic Structure of Matter Periodic table: 100 elements. Building blocks of atoms: fundamental particles. particle charge mass electron q e = - e m e = 9 . 109 × 10 - 31 kg proton q p = + e m p = 1 . 673 × 10 - 27 kg neutron q n = 0 m n = 1 . 675 × 10 - 27 kg SI unit of charge: 1 C (Coulomb). Elementary charge: e = 1 . 602 × 10 - 19 C . Atomic nuclei (protons, neutron) have a radius of 1 fm = 10 - 15 m . Atomic electron shells have a radius of
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Unformatted text preview: 1 Å = 10-10 m . • Atoms are electrically neutral (equal numbers of electrons and protons). • Ions: atoms with one or several electrons added or removed. • Isotopes: atoms differing in the number of neutrons. • Positively (negatively) charged objects have a deficiency (surplus) of electrons. tsl3 – p.1/1...
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This note was uploaded on 04/30/2008 for the course PHYS 204 taught by Professor Andrevantonder during the Spring '07 term at Rhode Island.

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