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Which of the following has the largest size?

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Which of the following has the largest size?
A. `S^(2-)`
B. `Se^(2-)`
C. `O^(2-)`
D. `Te^(2-)`
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Correct Answer - D
(A)`Fe_2(SO_4)_3oversetDeltatoFe_2O_3+3SO_3`
(B)`S+H_2SO_4oversetDeltato3SO_2+2H_2O`
(C )`CaSO_4+Coverset(Delta)toCaO + SO_2 +CO`
(D)`H_2SO_4+PCl_5overset(Delta)tounderset("Chlorosulphonic acid")(HSO_3Cl+POCl_3)+HCl`
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