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The electronic configuration of an element T IS 2, 8, 8, 1.(a) What is the group number of T?(b) What is the period number of T?(c) How many valence electrons are there in an atom of T?(d) What is the valency of T?(e) Is it a metal or a non-metal? |
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Answer» (a) Group 1since the valence electrons is 1 (b) With 4 shells T belong to period 4. (c) Number of electrons = 2+8+8+1=19 (d) T needs to lose one electron to complete its octet hence its valency is 1 (e) Since it has one valence electron, it is a metal |
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