Which of the following elements has the largest- size atoms?

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RRC Group D Previous Paper 15 (Held On: 29 Oct 2018 Shift 2)
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  1. P
  2. Cl
  3. Ar
  4. S

Answer (Detailed Solution Below)

Option 1 : P
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Detailed Solution

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The correct answer is option 1 i.e P

Key Points

  • Atomic radii- The distance from the centre of the nucleus to the outermost shell containing electrons called the atomic radius.
  • While moving left to right across a period in the periodic table, the atomic number increases.
  • Due to this the effective nuclear charge also increases.
  • This is because the nucleus pull is high for the electrons
  • From right to left in the periodic table the atomic radius increase.
  • As Ar is the 18 group element, Cl is the 17 group element, S is the 16 group element, and P is the 15 group element so P has the largest- size ions among these elements.
Name  Formula Atomic number
Phosphorous P 15
Chlorine Cl 17
Argon Ar 18
sulphur S 16

 

Reported 29-June-2021 umesh D96

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