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CGP EDU Academic Team
Published on: August 12, 2026
Which of the following orders is(are) correct for size :
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(a, b, d)
Isoelectronic series of ions; all have the xenon electron configuration.
Ionic radius 
Atomic number : Te = 52; I = 53; Cs = 55; Ba = 56.
Due to poor shielding of nuclear charge by 4f electrons.
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