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08/10/2021 5:09 pm
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(a) What are the usual number of valence electrons and valency of group 18 elements of the periodic table?
(b) What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?
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08/10/2021 5:10 pm
(a) Usual number of valence electrons is 8; Valency is 0 (zero).
(b) The number of valence electrons remains the same.