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An element X belongs to 3rd period and group 14 of the periodic table. State a) the number of valence electrons b) the valency c) the name of the element. |
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Answer» a) The number of valence electrons are 4. b) Its valency = 8 – 4 = 4. c) The electronic configuration of element is 2, 8, 4. (Because 3rd period means third orbit, group 14 has 4 valence electrons). So, the element with atomic number 14 is Silicon. |
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