Question

the atomic number of magnesium is 11 and 12 respectively and they belong to the same period which one would have small atomic size which one would be more electropositive to which group 1 had been belong

Answer 1

atomic no.11-sodium belongs to group 1
magnesium's atomic size is less than that of sodium bcoz atomic size decreases across a period
sodium is more electropositive bcoz metallic character also decreases across a period
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