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JEE Main202431 Jan 2024Morning ShiftChemistryp Block Elements (Group 13 & 14)Actual

Consider the oxides of group 14 elements S i O 2 , G e O 2 , S n O 2 , P b O 2 , C O and G e O . The amphoteric oxides are

Options

  1. AGeO , GeO 2
  2. BSiO 2 , GeO 2
  3. CSnO 2 , PbO 2
  4. DSnO 2 , CO

Correct answer

C. SnO 2 , PbO 2

Step-by-step solution

All members of group 14 when heated in oxygen form oxides. There are mainly two types of oxides, i.e., monoxide and dioxide of formula MO and MO 2 respectively. SiO only exists at high temperature. Oxides in higher oxidation states of elements are generally more acidic than those in lower oxidation states. The dioxides CO 2 , SiO 2 and GeO 2 are acidic, whereas SnO 2 and PbO 2 are amphoteric in nature. Amongst monoxides, CO is neutral. Hence option C is the answer.

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