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JEE Main 20179 AprilOnline
Exam
JEE Main
Year
2017
Date
9 April
Mode
Online
Subject
Chemistry
Chapter
p Block Elements (Group 13 & 14)

JEE Main 2017 · 9 April · Online · Chemistry · p Block Elements (Group 13 & 14)

Which one of the following is an oxide?

Which one of the following is an oxide?

Options

  1. ASiO2\text{S}\text{i}{\text{O}}_{2}
  2. BKO2\text{K}{\text{O}}_{2}
  3. CBaO2\text{B}\text{a}{\text{O}}_{2}
  4. DCsO2\text{C}\text{s}{\text{O}}_{2}

Correct answer

A. SiO2\text{S}\text{i}{\text{O}}_{2}

Step-by-step solution

SiO2\text{S}\text{i}{\text{O}}_{2} is a 3D polymer of tetrahedral SiO4−4\text{S}\text{i}{\text{O}}_{4}^{- 4} units.

Si4++O2−→oxide\text{S}{\text{i}}^{4 +} + {\text{O}}^{2 -} \to \text{o}\text{x}\text{i}\text{d}\text{e}

K++O2−→superoxide{\text{K}}^{+} + {\text{O}}_{2}^{-} \to \text{sup}\text{e}\text{r}\text{o}\text{x}\text{i}\text{d}\text{e}

Ba2++O22−→peroxide\text{B}{\text{a}}^{2 +} + {\text{O}}_{2}^{2 -} \to \text{p}\text{e}\text{r}\text{o}\text{x}\text{i}\text{d}\text{e}

Cs++O2−→superoxide\text{C}{\text{s}}^{+} + {\text{O}}_{2}^{-} \to \text{sup}\text{e}\text{r}\text{o}\text{x}\text{i}\text{d}\text{e}
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