chp6_slides - Mg easily in Mg containing enzymes)....

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CHP. 6 GROUPS OF ELEMENTS Reactive Metals: The s -block Elements 1. Alkali Metals (a) have 1 valence e - (b) soft, malleable, ductile (c) highly reactive with water and oxygen (d) higher reactivity further down the group (e) Common Uses/Applications Sodium Compunds: NaCl, NaOH Sodium/Potassium Pump: To main- tain a charge difference between the inside and outside of neurons. Lithium citrate, lithium carbonate: antidepressive drugs.
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2. Alkaline Earth Metals (a) have 2 valence e - (b) Not as reactive as Group 1A, but still form ions easily. (c) Mg and Ca are most common. (d) Mg used in building materials, alloyed with other metals. (e) Be very light and strong. Forms hard sheets used as heat shields and in elec- tronic applications. Highly toxic dust (replaces
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Unformatted text preview: Mg easily in Mg containing enzymes). Transitional Metals (d-block elements) 1. Unusual electronic congurations. (a) Have valence electrons in more than one shell. (b) 4 s and 3 d sublevels are close in Energy as are 5 s and 4 d . (c) Half lled and full lled sublevels gain stability. (d) Can give up dierent amounts of va-lence electrons when reacting. 2. Biological Catalysis ( V,Mn,Fe,Co, Ni,Cu,Zn,Mo,W ) One third of all en-zymes are metalloenzymes 3. Structural Materials ( Fe,Cu,Zn,Ti,W ) Alloys (Brass, etc.) 4. Coinage Metals: Copper, Silver, Gold. 5. Hg : used for thermometers, batteries, switches. Dangerous pollutant of food chain; major source from burning coal....
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This note was uploaded on 10/19/2011 for the course PHY 2020 taught by Professor Staff during the Spring '08 term at University of Florida.

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chp6_slides - Mg easily in Mg containing enzymes)....

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