part 1:  Given an electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5 Give the electron configuration of the most stable ion of this element: ????????   part 2:  Given an electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 Give the electron configuration of the most stable ion of this element: ????????

Q: Which one of the following is NOT a good way to make ethyl acetate? O (CH3CO)20, CH3CH2OH & H₂SO4 O…

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Q: Draw structures for the carbonyl electrophile and enolate nucleophile that react to give the enone…

A: A carbonyl electrophile and an enolate (formed after the deprotonation of an aldehyde/ketone)…

Q: What is the solubility product expression for Pb3(PO4)2

A: Given compound is Pb3(PO4)2. We have to calculate solubility product expression.

Q: 2. Name each alkyne. CH3CH₂CH₂C=CH a. b. CH3CH₂CH₂C=CCH3 3. Predict the product of the following…

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Q: Compare the change in pH for the water solution and the buffer solution as drops of acid are added

A: A question based on general chemistry that is to be accomplished.

Q: The dose unit of ionizing radiation is called the rad. The rad is defined in terms of O The…

A: Rad is a radiation unit and  expressed as a   a unit of energy that has been absorbed from…

Q: Question 13 Properties of bases, EXCEPT: Ohydroxide ions O electron pair donor O tastes bitter…

A: What are base .

Q: What is the molar solubility of lead(II) fluoride in 0.20 M NaF? The Ksp of lead(II) fluoride…

A: Here we have to determine the solubility of PbF2 in presence of 0.2M of NaF solution.  Data- Ksp…

Q: Two gas samples:  Flask A: 4.0 grams of helium (He) in a 1 liter flask at 25 degrees C Flask B:…

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Q: The observed color of a solution is green. The Amax of the solution is expected to be in the…

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Q: Which of the following sequences ranks the structures below in order of increasing acidity? OH Дон 1…

A: The stability of the heterocyclic compounds such a pyrrole and pyridine can be directly correlated…

Q: QUESTION 8 Which of the following is most prone to hydration (acid-catalyzed reaction with water)? O…

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Q: Calculate "work" and "change in internal energy" for the conversion of four moles of isopropyl…

A: (a) Given Heat of Vaporization of isopropyl alcohol =39850 Jmol-1  Temperature = 82°C In Kelvin =…

Q: Question: Draw the amide derivative of 3,5- Dimethylbenzoic acid

A: A question based on introduction to organic chemistry that is to be accomplished.

Q: What is the final product of the following reaction sequence? Give structural details of all…

A: This is a sequence of reaction where the first reaction step is reaction with grignard reagent then…

Q: One of the molecular orbitals of carbon disulfide, CS₂ (S=C=S) is shown below. Identify the type of…

A: Molecular orbital is formed by combination of atomic orbitals. Molecular orbitals are of two types:…

Q: Compound A has molecular formula C7H7X. Its ¹H-NMR spectrum shows a singlet at 2.26 ppm and two…

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Q: The value of E°cell for a particular electrochemical cell is +1.44 V.  This is a/an ________________…

A: The value of E°cell for a particular electrochemical cell is +1.44 V. This is a/an ________________…

Q: INFRARED SPECTRUM PO Elemental Analysis: C, 79.98; H, 4.79; 0,15.22 100 Molecule #8

A: Answer. Spectras gives us an insight about the functional groups mass and type and number of…

Q: What volume of 1.0150M Barium Hydroxide would be required to completely react to a 0.0132g sample of…

A: To proceed in this problem we need to first identify the reaction: Nickel nitrate compounds as…

Q: The gold plating of a ceramic figurine requires a total of 4.96 g of solid gold. If the current…

A: Given,  Mass of gold required, w = 4.96 g  Current passed, I = 11.8 A  Molar mass of gold = 197…

Q: Complete the statement below by writing the number (from the table below) that represents the set of…

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Q: Sulphur reacts with carbon and potassium separately to form compound P and compound Q. (a) Draw an…

A: Sulfur(S) is more electronegative than both carbon(C) and potassium(K).  Hence S accepts electrons…

Q: At room temperature, what is the pH of a solution containing 0.012 M ammonia

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Q: The following reaction is allowed to reach equilibrium. Cu₂ O(s) + CO(g) = 2 Cu(s) + CO₂(g) Which of…

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Q: Which formula is consistent with an acyclic alkane? a. C10H22 b. C10H20 c. C10H18 d. C10H16

A: Alkens are organic compounds that contain single bonds between carbon atoms in a compound.

Q: i) j) + + NaCN NaNH, CH₂CH₂OH NH3

A: The product of the given reactions are drawn below ;

Q: 3. Describe the formation of dative covalent bond using NH4* as example.

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Q: Look carefully at the measurements. Decide if the measurements are Accurate only, Precise only, Both…

A: Measurements are accurate only when the average value is very close to the actual value, but are not…

Q: 1 Autheco Aalbeco AaBbC AaBbd AaBbC AaBbce aan CHIA AufbCcD Tale Question 1: Reaction: CH(g) + 2H₂O…

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Q: Which of the following statement is accurate with respect to electrochemical cells? Group of answer…

A: Given,  Which of the following statement is accurate with respect to electrochemical cells ? Options…

Q: Which of the following statements regarding the Law of Thermodynamics is false? The entropy of the…

A: Law of thermodynamics which is false  are .

Q: 14 OH Which of the following is/are NOT TRUE about the compound above? It represents an isomer of…

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Q: Chemistry electronic configuration of O2-

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Q: When a substance undergoes oxidation... a) its oxidation number decreases. Electrons are a product.…

A: We have to identify the true statement for an oxidation reaction

Q: Complete the Reaction below and provide the following (i) a detailed stepwise mechanism to account…

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Q: *Research and discuss what is  Gadolinium Terbium *What are the most commonly mined minerals…

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Q: III. Hydrogen peroxide is used as a cleaning agent in the treatment of cuts and abrasions for…

A: Concept based on stoichiometry.

Q: What volume of 0.5 M H2SO4 solution is needed to neutralize 40,0 mL of a 0.25 M NaOH solution? O…

A: Given the concentration of H2SO4 and volume and concentration of NaOH solution. we are asked to…

Q: 4. You are given two beakers, one containing 0.5 gm of HC1 (mat-1) and another containing 0.5 M 250…

A: HCl is a strong acid that is completely dissociated in water to give 1 H+(aq). Hence [HCl] =…

Q: What is mean by scavenger

A: Definition Simply put, scavengers are creatures that frequently eat other dead organisms and animals…

Q: Describe how to mix up a buffer. Dissolve 1.20g of sodium dihydrogen phosphate and 0.885g of…

A: Please find the attachment.

Q: Draw the most stable conformations of cis-1,2-dimethylcyclohexane and trans-1,2-dimethylcyclohexane.

A: Conformational isomers: The conformational isomers are formed by the rotation of a carbon-carbon…

Q: (d) Iron (II) ions act as an homogeneous catalyst for the oxidation of iodide ions (1) by…

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Q: Question A graduated cylinder initially contains 48.6 mL water. When a piece of jewelry is submerged…

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Q: A B 1. Geometry/configuration 4 Phoses involved C Phases invervea Chromatography techniques are…

A: “chromatography” term originated  from Greek, chroma meaning, “colour,” and graphein meaning “to…

Q: Reaction of Benzoic acid and ethanol under acid catalysis is an example of formation of Aldol…

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Q: Design a synthetic scheme to complete the overall reaction shown below. You may use other reagents…

A: Here we have to synthesize the following given target compound from the starting material benzene,…

Q: What is the molarity of 0.4237 g of KHP (204.23) in 100.0 mL of solution? 0.03045 0.02075 0.04065…

A: Given Mass of KHP = 0.4237 gm Molar mass of KHP = 204.23 gm/mol Volume = 100.0 mL = 0.1 L

Q: Name two differences between the inductive effect and the resonance effect.

A: Name two differences between the inductive effect and the resonance effect.

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.