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25 January, 15:25

How do the atomic radius and metallic properties of sodium compare to the atomic radius and metallic properties of phosphorus?

(1) Sodium has a larger atomic radius and is more metallic.

(2) Sodium has a larger atomic radius and is less metallic.

(3) Sodium has a smaller atomic radius and is more metallic.

(4) Sodium has a smaller atomic radius and is less metallic.

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  1. 25 January, 19:03
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    The periodic trend of size increases as you move down and to the left of the period table, these elements are on the same row so the one farther to the left must be larger, sodium. Also, sodium must be more metallic as it is a metal, but phosphorus is a nonmetal.
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