Open Question
Iodine forms the acid anhydride I2O5. Write a balanced equation for the reaction of this anhydride with water, and name the acid that is formed.
Ch.22 - The Main Group Elements
Chapter 22, Problem 159
What is the electron-dot structure and geometry of XeO3?
Verified step by step guidance1
Step 1: Determine the total number of valence electrons available. Xenon (Xe) has 8 valence electrons, and each oxygen (O) has 6 valence electrons. Since there are three oxygen atoms, the total number of valence electrons is 8 + (3 * 6).
Step 2: Draw the skeletal structure of the molecule. Place the xenon (Xe) atom in the center and connect it to the three oxygen (O) atoms with single bonds.
Step 3: Distribute the remaining valence electrons to satisfy the octet rule for each oxygen atom. Start by placing lone pairs on the oxygen atoms until each has 8 electrons (including the bonding electrons).
Step 4: Check if the central xenon atom has a complete octet. If not, consider forming double bonds between xenon and oxygen atoms to ensure that xenon also satisfies the octet rule.
Step 5: Determine the molecular geometry using VSEPR theory. Count the number of bonding pairs and lone pairs around the central xenon atom to predict the shape of the molecule. XeO3 has three bonding pairs and one lone pair, leading to a trigonal pyramidal geometry.
Related Practice
Textbook Question
Chlorine reacts with molten sulfur to yield disulfur dichloride, a yellowish-red liquid. Propose a structure for disulfur dichloride.
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Open Question
In the early 1960s, krypton was found to react with fluorine gas in an electrical discharge tube at -183 °C. The compound formed was KrF2. What are the oxidation states of Kr and F in this compound? What is the electron-dot structure and geometry?
Open Question
Of ammonia, hydrazine, and hydroxylamine, which reacts to the greatest extent with the weak acid HNO₂? Consult Appendix C for equilibrium constants.
Open Question
Write balanced equations for the reactions of (a) H3PO4 and (b) B1OH23 with water. Classify each acid as a Brønsted–Lowry acid or a Lewis acid.
Open Question
Consider phosphorous acid, a polyprotic acid with the formula H3PO3. (a) Draw two plausible structures for H3PO3. For each one, predict the shape of the pH titration curve for the titration of H3PO3 (Ka1 = 1.0 * 10^-2) with aqueous NaOH. (b) For the structure with the H atoms in two different environments, calculate the pH at the first and second equivalence points, assuming that 30.00 mL of 0.1240 M H3PO3 (Ka2 = 2.6 * 10^-7) is titrated with 0.1000 M NaOH.