. a) Na, Mg, Al, Si and P are the first 5 elements of 3rd period, Which among these elements
is more. electropositive ? Why ?
b) Arrange the above elements in the decreasing order of their atomic size.
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a)electropositivity decreases on going from left to right along a period,so In the third period Na is the most electropositive
b)Atomic size also decrease on going from left to right along a period,so atomic size of
Na>Mg>Al>Si>P
b)Atomic size also decrease on going from left to right along a period,so atomic size of
Na>Mg>Al>Si>P
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