GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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decreases
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increases
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remains the same
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None of the above
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Detailed explanation-1: -In general, atomic radius decreases across a period and increases down a group.
Detailed explanation-2: -An atom gets larger as the number of electronic shells increase; therefore the radius of atoms increases as you go down a certain group in the periodic table of elements.
Detailed explanation-3: -The atomic radius of atoms generally decreases from left to right across a period. The atomic radius of atoms generally increases from top to bottom within a group.
Detailed explanation-4: -As we move down a group, the atomic number increases causing the number of electrons and shells to increase. This results in an increase in atomic radius down the group.
Detailed explanation-5: -On the periodic table, atomic radius generally decreases as you move from left to right across a period (due to increasing nuclear charge) and increases as you move down a group (due to the increasing number of electron shells).