The ionic substances KF, CaO and ScN are isoelectronic .  Examine the 8.2 table lattice energies and account for any trends you observe.

Q: Consider the following information. • The enthalpy of formation of MgO is AH; = -601.6 kJ/mol. • The…

A: We have O-(g) +e- →O2-(g) and also we have the following data For the reaction, Mg (s)→Mg(g),…

Q: Alkali metals form several binary oxides (molecules containing only the metal and oxygen). What are…

A: The alkali metals are metals are present in the first group of periodic table and has one electron…

Q: Which metals form cations with varying positive charges?

A: In this question we have to explain metals from cations with varrying positive charges.

Q: Considering only ions with charges of +1, +2, -1 and -2, or neutral atoms, give the symbols for 4…

A: Isoeletronic species are those species which have equal number of electrons present in them  Since…

Q: Which element forms a 3+ ion that has the electron configuration 3Kr44d 6?

A: The given electronic configuration of the 3+ ion is:  [Kr] 4d6 ⇒ The electronic configuration of the…

Q: Consider selenium oxychloride (SeOCl2):How many regions of electron density surround the central…

A: The compound given is SeOCl2.

Q: Using Coulomb's law to predict trends in lattice energy:  E = kQ1Q2 / r ∝ QcatQan / IRcat + IRan…

A: Lattice energy is defined as the amount of energy required to separate one mole of an ionic solid…

Q: Which ionic compounds would have the greatestlattice energy: NaCl, KCl, or MgC l 2 ? Explain…

A:

Q: Consider the following information. The enthalpy of formation of SrO is Δ?∘f =−592.0 kJ/mol. The…

A: Given that  The enthalpy of formation of SrO is Δ?∘f =−592.0 kJ/mol.   The enthalpy of sublimation…

Q: Choose all of the following statements about the bonding atomic radii that are CORRECT?     The…

A: The question is based on the concept of periodic properties of elements. we have  to identify which…

Q: which of the following has the most metallic character? ln, O, P, Sb, Ge

A:

Q: Lattice energy diagram for LiI(s). Show all steps of forming LiI(s) from gaseous ions

A: Answer: This question is based on Hess law which suggests that enthalpy of formation of a compound…

Q: b) Write a full electron configuration of 82Pb, and a shortham Atom: 1s 2s 2p 3s 3p 3d 1 st ion:…

A: Since, Electronic configuration represent the electron present in orbital in which way. Arrangement…

Q: what is be2+ valence electron configuration?

A: The atomic number of Be = 2Hence, the electron configuration of Be is: 1s2 2s2

Q: e the lattice energy of MX.

A:

Q: Explain how periodic trends in ionization energy and electron affinity explain why atoms of elements…

A: Ionisation energy: it is the amount of energy required to remove the most loosely bound electron…

Q: Given the following information, construct a Born-Haber cycle to calculate the lattice energy of…

A: The Born-Haber cycle is a thermochemical cycle that represents the energies associated with each…

Q: Consider an ionic compound, MX_2, composed of generic metal M and generic, gaseous halogen X. The…

A:

Q: write the full electron configuration for the calcium (Ca2+)ion

A: Atomic number of calcium is 20. Electronic configuration is given below:

Q: The first three ionization energies of an element X are 495, 1245, and 1391 kJ-mol-1. What is the…

A:

Q: Arrange these ions according to ionic radius. Ca2+, K+, Cl-, S^2-, P^3-

A: Rule: A nucleus of strong or high positive charge pulls its valence electron cloud towards itself…

Q: Give a description of the kinds of ions that are expected to form by group : 1A, 2A, 6A, 7A…

A: According to the long form of periodic table: Group 1 A metals are alkali metals which have general…

Q: Consider an ionic compound, MX, composed of generic metal M and generic, gaseous halogen X. The…

A: Given that , The enthalpy of formation of MX is Δ∘f=−501 kJ/mol.   The enthalpy of sublimation of M…

Q: The pattern that emerges for many atoms (and especially C, N, O, F) is sometimes referred to as the…

A: The octet rule states that atoms tend to form compounds in ways that give them eight valence…

Q: Discuss the different property trends of the elements ( for example atomic and ionic radius,…

A: ATOMIC RADIUS :-  The atomic radius of a chemical element is a measure of the size of its atoms,…

Q: Combine two elements (cesium, berryllium, bromine, and flourine) from the following: ( K, Mg, Mn, N,…

A: Molecule- When two or more atoms combine together chemically, a bond is formed between them and they…

Q: Write the condensed (noble-gas) electron configuration of Mg

A: General Electronic configuration of Mg2+ - 1S2, 2S2,2p6,3S2 But question asked Condensed (Noble-gas)…

Q: Lattice energies and electron affinities are very difficult to measure experimentally. Fairly…

A: Lattice energy is the energy released upon formation of one mole of a solid from its constituent…

Q: Consider the following set of successive ionization energies: IE1=578kJ/mol IE2=1,820kJ/mol…

A:

Q: Consider an ionic compound, MX3, composed of generic metal M and generic gaseous halogen X. • The…

A:

Q: Lattice energies and electron affinities are very difficult to measure experimentally. Fairly…

A: Given,  For calculation of election affinity of iodine, construct Born-Haber cycle for CaI2 based on…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.