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Question

Define atomic size or atomic radius?


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Solution

  • The modern periodic table is an arrangement of all the elements known by their increasing atomic number and recurring chemical properties.
  • It is a tabular display of 118 chemical elements which consists of horizontal rows called periods and vertical columns are called groups.
  • Atomic size is the distance between the center of the nucleus of an atom and its outermost shell.
  • The atomic radius decreases as we move from left to right in a period and it increases when we go down a group.

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