The atomic radius of Li, Na and K are 1: 33A, 1. 54A and 1….

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Chemistry JAMB 1989

The atomic radius of Li, Na and K are 1: 33A, 1. 54A and 1. 96A res pectively. Which of the following explaqins this gradation in atomic radius?

  • electropositivity decreases from Li to Na to K
  • electronegativity decreases from Li to Na to K
  • the number of the electron shells increases from Li to Na to K checkmark
  • the elements are in the same period

The correct answer is: C

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