We’re being asked to identify the element that has the smallest atomic radius.
Atomic radius represents the distance from the nucleus to the outer shell of an element.
Trend of atomic radius in the periodic table:
• decreases going from left to right of a period
• increases going down a group
Place the following in order of increasing atomic radius.
a) O < Br< As
b) As < Br< O
c) O < As < Br
d) As < O < Br
e) Br < As < O
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