A compound of gallium with chlorine has a melting point of 350 K (77 °C) and a boiling point of 474 K (201 °C). Is the compound ionic or covalent? What is a likely formula?
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A compound of gallium with chlorine has a melting point of 350 K (77 °C) and a boiling point of 474 K (201 °C). Is the compound ionic or covalent? What is a likely formula?
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- Why do nonmetals tend to form anions rather than cations?Explain in great detail how to name K2SO3 and Fe2(SO3)3 compounds. What type of compounds are they? What are the charges on the metals? How are the nomenclature rules different for these two compounds?Explain in detail what is the type of bonding between NA+ and Cl- ions in NaCl?
- For many years after they were discovered, it was believed that the noble gases could not form compounds. Now we know that belief to be incorrect. A mixture of xenon and fluorine gases, confined in a quartz bulb and placed on a windowsill, is found to slowly produce a white solid. Analysis of the compound indicates that it contains 77.55% Xe and 22.45% F by mass.(a) What is the formula of the compound?(b) Write a Lewis structure for the compound.(c) Predict the shape of the molecules of the compound.(d) What hybridization is consistent with the shape you predicted?Which would have a larger lattice energy value, K2S or CaS explain?Answer the following questions that relate to the chemistry of nitrogen. (a) Two nitrogen atoms combine to form a nitrogen molecule, as represented by the following equation. 2 N(g) ® N2(g) Using the table of average bond energies below, determine the enthalpy change, AH, for the reaction. Average Bond Energy (k) mol-1) Bond N-N 160 N=N 420 N°N 950 (b) The reaction between nitrogen and hydrogen to form ammonia is represented below. N2(g) + 3 H2(g)® 2 NH3(g) AH° = -92.2 kJ Predict the sign of the standard entropy change, AS', for the reaction. Justify your answer. (C) The value of AG° for the reaction represented in part (b) is negative at low temperatures but positive at high temperatures. Explain.
- Predict which of these compounds are ionic and which are covalent.(A) Ca3N2(B) Li2CO3(C) PCl5(D) NaOH(E) CH4(F) MgOA compound of gallium with chlorine has a melting point of 77 ∘C∘C and a boiling point of 201 ∘C∘C. Is the compound ionic or covalent? ionic covalent What is a likely formula? Express your answer as a chemical formulaAn ionic compound of formula XY2 (X = cation with two positive charges, Y = anion with one negative charge) has the following mass composition: Mg 10.9%, Cl 31.8%, O57.3%. (a) What is the chemical formula and name of the compound? (b) Give the most probable Lewis structure for the ions contained in the compound.