Question : In a peridic table of elements on moving from left to right across a period ,the atomic radius
Option 1: Decreases
Option 2: Increases
Option 3: Remains un changed
Option 4: Does not follow a definite pattern
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Correct Answer: Decreases
Solution : The correct option is - decreases.
In a period, the atomic radius decreases from left to right. Protons are added to the atom's nucleus of the elements, increasing its positive charge and strengthening its pull on the electrons. As a result the size of atom decreases due to stronger attractive force from nucleus on moving left to right across a period.
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