Group Trends - Group Trends: Selected Nonmetals Hydrogen...

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Group Trends: Selected Nonmetals Hydrogen Hydrogen has a 1 s 1 electron configuration and is placed above the alkali metal group. Hydrogen is a non-metal , which occurs as a gas (H 2 ) under normal conditions. Its ionization energy is considerably higher (due to lack of shielding, and thus higher Z eff ) than the metals and is more like the nonmetals Hydrogen generally reacts with other nonmetals to form molecular compounds (typically highly exothermic) Hydrogen reacts with active metals to form metal hydrides which contain the H - hydride ion : 2Na( s ) + H 2 ( g ) -> 2NaH( s ) Hydrogen can also lose an electron to yield the aqueous H + ( aq ) ion Group 6A: The Oxygen Family 6A 8 O 16 S 34 Se 52 Te 84 Po As we proceed down group 6A the elements become more metallic in nature: Oxygen is a gas, the rest are solids Oxygen, sulfur and selenium are nonmetals Tellurium is a metalloid with some metal properties Polonium is a metal Oxygen can be found in two molecular forms, O
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This note was uploaded on 11/22/2011 for the course CHEMISTRY CHM1025 taught by Professor Laurachoudry during the Fall '10 term at Broward College.

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Group Trends - Group Trends: Selected Nonmetals Hydrogen...

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