We’re being asked to rank the given set of elements in order of decreasing atomic radius.
Atomic radius represents the distance from the nucleus to the outer shell of an element.
Trend of the atomic radius in the periodic table:
• decreases going from left to right of a period
• increases going down a group
For the given elements, let’s check their location in the periodic table and see how they fall in the trend mentioned.
Arrange the following elements in order of decreasing atomic radius: Sc, Sr, Cl, P, Ga, Ne. Rank elements from largest to smallest
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