An atom has the electron configuration 1s2 2s2 2p³. How many valance electrons does this atom have?

Q: The red arrow represents ENERGY Reaction progress the difference in energy between reactants and…

A: An energy profile diagram represents the energy pathway ( most favourable ) of the transformation of…

Q: Sketch a MO energy level diagram for cluster bonding in E6 in Oh Point group using these orbitals (…

A: The objective of the question is to sketch a Molecular Orbital (MO) energy level diagram for cluster…

Q: Add or subtract the following measurements. Be sure each answer you enter contains the correct…

A: A significant figures are the numbers that are used to express the accuracy of a result starting…

Q: alculate the volume in liters of a 0.018 mmol/L potassium permanganate solution that contains 150. g…

A: Molarity - molarity of solution is defined as number of moles of solute present in 1 liter of…

Q: NO₂ / HNO3 عمده واکنش زیر کدام است؟ -NO₂ (۲ ۱- محصول (۱

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: A chemist prepares a solution of iron(II) bromide (FeBr₂) by measuring out 63. g of iron(II) bromide…

A: The mass of the FeBr2 is 63. g.The volume of the solution is 100. mL.To find the concentration of…

Q: Before the mRNA transcribed from a gene can be used for translation into a protein, it must be

A: Before the mRNA transcribed from a gene can be used for translation into a protein, it must undergo…

Q: air contains an average of about 0.032 percent by volume of carbon dioxide and henrys law constant…

A: The first part of the question asks for the concentration of carbon dioxide in a water sample when…

Q: cm x 4.125 cm mol L -41 m +0.50 s cm X 1.65 L = mol 2 0 S

A: (1) For multiplication and divisionWhen two numbers are multiply and divide then the answer has the…

Q: how much heat is required to raise the temperature of 5.0 g of aluminum from 25.0 c to 300.0 c

A: The objective of this question is to calculate the amount of heat required to raise the temperature…

Q: A flask of 1.00 L. contains a mixture of 1.00 g of hydrogen gas and 1.00 g of helium gas at 27°C.…

A: Volume(V) = 1.00 LR = 0.0821 Latm/molKMolar mass of hydrogen(H) = 2.02 g/molMolar mass of helium(He)…

Q: Question 13 The following is a H-N-H aliphatic aromatic_compound.

A: In aromatic compounds, alternating double bonds are present while in aliphatic compounds,generally,…

Q: 4. Review the structures of the heart. Use the text, PPT, and lab manual to review these. Which…

A: The heart is a muscular organ that pumps blood throughout the body. It is divided into four…

Q: (c) The chromium concentration in an aqueous sample was determined by pipetting 10.0 cm³ of the…

A: The unknown concentration of a substance in a solution can be calculated based on the absorbance…

Q: 6. Which set would have the same electron configuration? O a. 0², Ne, CI O b. S2, Cat, Ar O c. N³,…

A: The electron configuration of an atom is represented using a notation that specifies the number of…

Q: Write the symbols for the atoms connecting with a single bond to show attachment. Cl F F-Xe-F C₁7]…

A: The objective of the question is to represent the given atoms with single bonds to show their…

Q: lewis structure of C6H5(O)HC = CHCH3

A: A Lewis structure is a simple structure of a molecule with proper arrangement of all valence…

Q: Identify likely groups and identify likely signals on the IR. (ex. OH, NH, C=C, C-H sp3, aromatic…

A: The objective of the question is to identify the functional groups present in a compound based on…

Q: e) f) Br₂ CC14 1) BH3, THF 2) H₂O₂, OH

A:

Q: Macmillan Learning Geometric isomers occur in some alkenes. These isomers are called cis-trans…

A: we assign priorities to different substituents present across double bonds based on CIP rules.When…

Q: -1 " A 25.0 g sample of quartz, which has a specific heat capacity of 0.730 J.g •°C is dropped into…

A: The objective of this question is to calculate the equilibrium temperature of the water when a…

Q: Where given: molecular mass of NO2 = 46 g/mol molar volume of air at 1 atm = 0.02445 m3/mol NO2…

A: To calculate the percentage decrease in the NO2 concentration when it is diluted in air, we need to…

Q: Fill in the name and empirical formula of each ionic compound that could be formed from the ions in…

A: Empirical formula : Empirical formula is defined as the chemical formula which shows the ratio of…

Q: Hydrogen Nucleophiles Which of the following cannot be formed during the reduction of an aldehyde or…

A: The question is asking us to identify which type of alcohol cannot be formed during the reduction of…

Q: P (Torr) 300 250 200 PC 0 Liquid (1) 1+v H Vapor (v) T XB I 0.32 0.46 0.60 0.70 0.80 1 Let the…

A: Calculation the mole fraction of B using the formula  given below.Mole fraction of B is 0.46

Q: 3. Consider the equilibrium below: 1.6 mol of HI was placed in a 1.0 L container and allowed to…

A: moles of HI = 1.6 molvolume of container = 1.0 LK value of reaction = 36

Q: 7. >., Draw three concise arrows in the structure below and then draw the resulting resonance…

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: Br HO

A: The question is based on the concept of organic synthesis.We need to synthesize the product using…

Q: 12. Name each chemical and complete the reaction ↑ Add file + H₂O

A: Given reaction is an example of a hydrolysis reaction.In the given example hydrolysis of ester to…

Q: 16. Carbon + lodine 17. Copper (II) + Oxygen bro Bond Type: Formula: Name: Molar Mass: Bond Type:…

A: Q16:-Bond type- Covalent Bond Carbon is a non metal and iodine is a non-metal therefore  carbon and…

Q: 5) If there are not enough electrons to give the central atom an octet then try multiple bonds 00…

A: According to octet rule, each atom combines so that it's complete octet (outermost 8 e- ) or…

Q: In thie exercise three drops of concentrated HCl were added to the five drops of 0.5 M solution of…

A: In this experimental scenario, a series of chemical reactions were conducted involving the addition…

Q: Suggest a short synthetic route for the preparation of compound D from compound C C OH D Br COOH

A: The reaction includes an increase in the number of carbon atoms in the skeleton.

Q: III III لار 2) NaOH 3) 4) H., A , AICI, IV 11 ?

A: Friedel-crafts Acylation reaction takes place to produce a ketone.

Q: 1) For the following polymers, a) sketch in your own writing showing the star monomer(s) and polymer…

A: Note: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: 100 C4H200 O C3H13CI O C5H10N OC6H14 C6H12 80 60 40 20- 0 10 20 40 pradelt 60 m/z 80 100 120 140…

A: The question is based on the concept of organic spectroscopy. We need to analyse the spectral data…

Q: How many grams of ammonia must you start with to make 1500.0 L of a 0.190 M aqueous solution of…

A:

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains…

A: The objective of this question is to calculate the new temperature of the water bath after a…

Q: 1. Fill in the blanks in the table for aqueous solutions of the compounds shown. The density of the…

A: The objective of the question is to fill the table.

Q: Fill in the name and empirical formula of each ionic compound that could be formed from the ions in…

A: Ionic compound: The compounds formed by complete transfer of electrons from metal to non metal are…

Q: -1 1 A 28.0 g sample of brass, which has a specific heat capacity of 0.375 J.g .°℃ is dropped into…

A: The objective of this question is to calculate the equilibrium temperature of the water when a brass…

Q: Identify the following errors as systematic or random. A thermometer is placed such that the bulb…

A: A systematic error is defined as an error that occurs when the same thing is changed predictably. In…

Q: The term "nuclear energy" is most closely associated with which one of the following processes? 1.…

A: The question addresses the association of the term "nuclear energy" with specific nuclear processes,…

Q: Part A In an oxidation-reduction reaction, the species reduced ► View Available Hint(s) loses…

A: Oxidation–reduction reactions, also called redox reactions, it is the reaction in which the transfer…

Q: Complete the table below, using the diagram of an atom shown at right. name neutron symbol ta…

A: In an atom three fundamental particles are present. Positively charged particle proton and neutral…

Q: What are the bond angles around the central atom in H₂CS? Select one: 90° a. O b. 180° O C. 109.5° O…

A: Information about the question

Q: The theory that argues that individual investors and financial institutions have specific maturity…

A: Market Segmentation Theory suggests that the bond market is divided into distinct segments based on…

Q: Read about condensed (Bruice, pp. 17 - 18) and skeletal structures (Bruice, p. 19 review Lewis…

A: Given structure is

Q: 11.0 g of cream at 12.9 °C are added to an insulated cup containing 100.0 g of coffee at 92.1 °C.…

A: The objective of this question is to calculate the equilibrium temperature of the coffee when cream…

Q: Select the molecule that corresponds to the second strongest Bronsted-Lowry acid in the group: FF…

A: The acid which forms stable cojugate base are the stronger Bronsted-Lowry acid. So, the more stable…

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.