Only one valence electron, but not part of a family., The only non-metal that is liquid at room temperature., The only metal that is liquid at room temperature., Group with 4 valence electrons., Group that will form 2+ cations., Extremely reactive metal., Extremely reactive non-metal., Semi-conductor metalloid used in electronics., Completely un-reactive family with complete valence shell., Period 3 element with 7 valence electrons..

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