LO-12. The atomic symbols of elements are: A, B, C dan Da) Write the electron configurations of the four atoms of the above elements.b) By combining two of the four elements above, which combinations are possible to form:i. lonic compoundii. Covalent compoundMention the chemical formula of the compound that can be formed.

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Answered: The atomic symbols of elements are: A,…

Introductory Chemistry: A Foundation

8th Edition

ISBN:9781285199030

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter12: Chemical Bonding

Section: Chapter Questions

Problem 102AP

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Use the data in Figure 3.11 and Table 3.2 to calculate the energy changes (E) for the following pairs of reactions: (a) Na(g)+I(g)Na+(g)+I(g) Na(g)+I(g)Na(g)+I+(g) (b) Rb(g)+Br(g)Rb+(g)+Br(g) Rb(g)+Br(g)Rb(g)+Br+(g) Explain why Na+I and Rb+Br form in preference to NaI+ and RbBr+ .
When elements in the second and third periods occur in compounds, what number of electrons in the valence shell represents. the mast stable electron arrangement? Why?
7.107 How do the Lewis symbols for C, Si, and Ge reflect the similarity in their electron configurations?
In ionic bonding, the electrons are shared between the atoms. the process of fanning an ionic bond is highly endothermic overall. the bonding that occurs is usually between two nonmetal atoms. a noble gas configuration is fanned far each element or ion. At least two of the above statements are correct.
Consider an ionic compound, MX2MX2, composed of generic metal MM and generic, gaseous halogen XX. The enthalpy of formation of MX2MX2 is Δ?∘f=−923ΔHf∘=−923 kJ/mol. The enthalpy of sublimation of MM is Δ?sub=131ΔHsub=131 kJ/mol. The first and second ionization energies of MM are IE1=755IE1=755 kJ/mol and IE2=1364IE2=1364 kJ/mol. The electron affinity of XX is Δ?EA=−329ΔHEA=−329 kJ/mol. (Refer to the hint). The bond energy of X2X2 is BE=153BE=153 kJ/mol. Determine the lattice energy of MX2MX2. Δ?lattice=ΔHlattice= kJ/mol
(a) What are valence electrons? (b) How many valence electrons does a nitrogen possess? (c) An atom has the electron configuration 1s22s22p63s23p2. How many valence electrons does the atom have?
Although it is helpful to know that many ions have the electronarrangement of a noble gas, many elements, especially among themetals, form ions that do not have a noble-gas electron arrangement.Use the periodic table, Figure 2.14, to determine which ofthe following ions has a noble-gas electron arrangement, andwhich do not. For those that do, indicate the noble-gas arrangementthey match: (a) Ti4+, (b) Mn2+, (c) Pb2+, (d) Te2- , (e) Zn2+.
Without stratospheric ozone (O₃), harmful solar radiation would cause gene alterations. Ozone forms when the bond in O₂ breaks and each O atom reacts with another O₂ molecule. It isdestroyed by reaction with Cl atoms formed when the C−C lbond in synthetic chemicals breaks. Find the wavelengths oflight that can break the C−Cl bond and the bond in O₂.
Starting with 1s2draw out the complete electron configuration for the most stable ion of selenium. Explain how you used the Octet Rule to determine your answer.
Item 5 Answer the following questions related to the chemical bonding in substances containing Cl. (a) What type of chemical bond is present in the Cl2 molecule? (b) Cl2 reacts with the element Sr to form an ionic compound. Based on periodic properties, identify a molecule, X2, that is likely to react with Sr in a way similar to how Cl2 reacts with Sr. Justify your choice. (c) A graph of potential energy versus internuclear distance for two Cl atoms is given below. On the same graph, carefully sketch a curve that corresponds to potential energy versus internuclear distance for two Br atoms. (d) In the box below, draw a complete Lewis electron-dot diagram for the C2Cl4 molecule. (e) Answer the following based on the diagram you drew above. (i) What is the hybridization of the CC atoms in C2Cl4? (ii) What is the approximate chlorine-carbon-chlorine bond angle in C2Cl4? (iii) Is the C2Cl4 molecule…
The lattice energies of rubidium fluoride (RbF) and caesium chloride (CsCl) are -760kJmol^-1 and -650kJmol^-1 respectively. What is the lattice energy of caesium fluoride (CsF) likely to be? (Atomic number Rb 37; Cs 55)
For coordinate covalent bonds: What is a coordinate covalent bond? Use Lewis structures to show how H+ and NH3 form a coordinate covalent bond resulting in NH4+ (i.e. write out the reaction using Lewis structures). Why is it tough to recognize the coordinate covalent bond in NH4+? What is one way to recognize that something has a coordinate covalent compound? Why are they so important?

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