The position of sodium in the modern periodic table is group - I' and period - 3.
(a) State two properties based on its position.
b)Name the element in group 16 in period 3.
c) Relate answer (b) to sodium with respect to atomic radius and explain.
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Sodium
Period period 3
a)Group group 1: hydrogen and alkali metals
b) Sulfur
c)That means that going from left to right along the group, the charge increases while the number of energy levels stays the same, so the valence electrons are drawn in closer. ... So sodium (Na) has the largest atomic radius, as the valence electrons are the least attracted to the nucleus.
Explanation:
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