U is a made up element and contains 5 valence electronsE is a made up element and contains 6 valence electrons1. Calculate the total valence electrons does UE, (1 pt)2. Draw the Lewis structure of UE, (5 pt)3. UE, is considered a highly reactive chemical. Using your knowledge of Lewis structure, explain why that is?

Nitrogen is one of the element which contains 5 valence electron and Oxygen is one of the element…

Answered: U is a made up element and contains 5…

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter4: Forces Between Particles

Section: Chapter Questions

Problem 4.8E

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Bromine-containing species play a role in environmental chemistry. For example, they are evolved in volcanic eruptions. (a) The following molecules are important in bromine environmental chemistry: HBr, BrO, and HOBr. Which is an odd-electron molecule? (b) Use bond dissociation enthalpies to estimate rH for three reactions of bromine: Br2(g) 2 Br(g) 2 Br(g) + O2(g) 2 BrO(g) BrO(g) + H2O(g) HOBr(g) + OH(g) (c) Using bond dissociation enthalpies, estimate the standard enthalpy of formation of HOBr(g) from H2(g), O2(g), and Br2(g). (d) Are the reactions in parts (b) and (c) exothermic or endothermic?
U is a made up element and contains 5 valence electrons E is a made up element and contains 6 valence electrons Calculate the total valence electrons does UE2 Draw the Lewis structure of UE2 UE2 is considered a highly reactive chemical. Using your knowledge of Lewis structure, explain why that is?
The reaction of a metal, M, with a halogen, X2, proceeds by an exothermic reaction as indicated by this equation: M(s) + X2(g) ⟶ MX2(s). For each of the following, indicate which option will make the reaction moreexothermic. Explain your answers.(a) a large radius vs. a small radius for M+2(b) a high ionization energy vs. a low ionization energy for M(c) an increasing bond energy for the halogen(d) a decreasing electron affinity for the halogen(e) an increasing size of the anion formed by the halogen
A compound is being tested for use as a rocket propellant. The analysis showed that this compound contained 18.54% F, 34.61% Cl, and 46.85% O.a. Suppose the molecular formula is the same as the empirical formula, describing the Lewis structure for this moleculeb. Use the VSEPR theory to predict the structure of this moleculec. List the three anions of the elements according to their increment in the radius of the ion. Ar F = 19, Cl = 35,5, O= 16
The equation for the combustion of gaseous methanol is 2 CH3OH(g) + 3 O2(g) 2 CO2(g) + 4 H2O(g) (a) Using the bond dissociation enthalpies in Table 8.8, estimate the enthalpy change for this reaction. What is the enthalpy of combustion of one mole of gaseous methanol? (b) Compare your answer in part (a) with the value of tHcalculated using enthalpies of formation data.
The most common exceptions to the octet rule are compounds or ions with central atoms having more than eight electrons around them. PF5, SF4, CIF3, and Br3 are examples of this type of exception. Draw the Lewis structure for these compounds or ions. Which elements, when they have to, can have more than eight electrons around them? How is this rationalized?
In which of the following molecules does the sulfur have an expanded octet? For those that do, write the Lewis structure. (a) SO2 (b) SF4 (c) SO2Cl2 (d) SF6
Using the standard enthalpy of formation data in Appendix G, calculate the bond energy of the carbon-sulfur double bond in CS2.
This Lewis structure for SF5+ is drawn incorrectly. What error was made when determining the number of valence electrons?
n your own words, what is meant by the term electronegativity? What are the trends across and down the periodic table for electronegativity? Explain them, and describe how they are consistent with trends of ionization energy and atomic radii.
The standard enthalpies of formation for S(g), F(g), SF4(g), and SF6(g) are + 278.8, + 79.0, 775, and 1209 kJ/mol, respectively. a. Use these data to estimate the energy of an SF bond. b. Compare your calculated value to the value given in Table 8.5. What conclusions can you draw? c. Why are the Ht0 values for S(g) and F(g) not equal to zero, since sulfur and fluorine are elements?
Describe the type of bonding that exists in the Cl2(g) molecule. How does this type of bonding differ from that found in the HCl(g) molecule? How is it similar?

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