Indicate which of the given electronic configurations are true ground state configurations for the respective atoms and which are false: T or F =  Au  [Xe]4f145d106s1 T or F = Sc  [Ar]4s13d2 T or F = F  1s22s22p5 T or F = Si  1s22s22p63d23s2 T or F = Rn  [Xe]4f145d106s26p67s2

Q: . In a neutral compound, compound? Zero. compounds. Hint: Look at the rules on page 135. a. Cro IS I...

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Q: A solid crystal of NaCl is O a. soft, low melting, a poor electrical conductor. O b. soft, high melt...

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Q: Place the following substances in an INCREASING order based on the expected pH of an aqueous solutio...

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Q: tion 20 Place the following substances in an INCREASING order based on the expected pH of an aqueous...

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Q: You have 500.0 mL of a buffer solution containing 0.30 M acetic acid (CH3COOH) and 0.20 M sodium ace...

A: We have to predict the pH of final buffer solution.  

Q: What is the cell potential for the following reaction at 298.15 K?  Y(s) + Z2+(0.010 M) → Y2+(0.001...

A: To calculate the cell potential, we have to first calculate the standard cell potential.  E° = Ered ...

Q: A detergent solution has a pH of 11.94 at 25°C. What is the hydroxide ion concentration ([OH]) in th...

A: The concentration of OH- is 8.7096×10-3.

Q: Strongest Intermolecular force in NaCl

A: The attraction forces between the different molecules are known as intermolecular forces.

Q: How many atoms are there in a cubic close-packed unit cell of platinum? О а. 1 O b.6 Ос. 2 O d.4 O e...

A: Find out number of atoms are there in cubic close - packed unit cell of platinum ?

Q: D. Mass Spectrum 120 55 100 80 60 28 84 41 40 56 27 39 20 42 26 37 38 36 40 43 48 49 50 51 s, 53 54 ...

A: Mass spectrum is the technique used in analytical chemistry for the separation of ions based on the ...

Q: Which statement is true of a chemical change? A. Heat is always exchanged between the system and th...

A: Thermodynamics is the branch of chemistry in which we deals for the change in energy or heat, work a...

Q: What is the conjugate base of H3PO4? O A. H2PO42- O B HPO42- В. O C. OH OD.PO43- E H2PO4

A:

Q: 6ml of water used (1ml of buffer and 5ml of soft water)    Hard Water Trial 1 Hard Water Trial 2 ...

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Q: ne produced gas e natural gas grid.

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Q: Calculate the value of AH° for the reaction. 2 H2S (g) + 3 02 (g) > 2 H2O (1) + 2 SO2 (g) AH°F H2S (...

A: The standard enthalpy of formation is the enthalpy change of reaction in standard conditions when on...

Q: What is the empirical formula for an unknown organic compound, if the compound contains 75% carbon a...

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Q: A raindrop has a mass of 50. mg and the Pacific Ocean has a mass of 7.08 × 1040 kg. Use this informa...

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Q: estion 8 2N20(g)+ N2H4(9) 2 2H20(g) + 3N2(g) If Ke for the above reaction is 36.94 at 197.9 K, what ...

A: given  Kc =36.94 at temperature 197.9K for an equilibrium reaction we are required to find kp using ...

Q: Radioactive phosphorus-32 decays with a half-life of 14.0 days. A chemist obtains a fresh sample of ...

A: We have to calculate the number of days chemist have to do the experiment.  

Q: entify the major organic product of the following reaction. If two regioisomers are formed in apprec...

A: This reaction is based on coupling reaction.    First we need to know the structures of p-chlorobenz...

Q: 51 For the following reaction, K = 0.538 at 313 K. N;O(g) = 2 NO2(g) If a reaction vessel initially ...

A: Given data :  1. K = 0.538  2. Initial concentration of N2O4 = 0.0500 M   

Q: What is the mass in grams of 1.37 x 10^24 atoms of nickel? ______ grams How many nickel atoms are ...

A: Calculate mass and number of atoms of Nickel in the given data in the question---  Value--  Avogadro...

Q: WHAT VOLUME OF 0.107 N SILVER NITRATE IS REQUIRED TO TITRATE THE SODIUM CHLORIDE IN 4.0 G SAMPLE OF ...

A: 0.107 N Mean 0.107 mole is present in 1000ml

Q: Place the following substances in an INCREASING order based on the expected PH concentration). So "1...

A: Expected pH in increasing order 1) HCl (Lowest pH) 2) H2Se 3) H2S 4) SO32- 5) CsOH (Highest pH) HCl ...

Q: (4 blanks) An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 °C and ...

A:  The Carnot engine estimates the maximum efficiency any heat engine can obtain.   Given m=85.0 kg L=...

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Q: Calculate the percent ionization for bromic acid in a solution that contains 0.00850 M acetic acid a...

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Q: Follow the curved arrows and draw the products of the following reaction. Include all lone pairs and...

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Q: 4. The major ways to utilize, capture, or store the sun's energy are solar thermal, solar voltaic, b...

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Q: Consider the reaction: CD   C2+ + B2-; Ksp = 2.4 x 10-8 What is ΔG° at 25 °C?     87.2 kJ/mol   ...

A: Given,  Ksp = 2.4 x 10-8 Temperature, T = 25 °C = (25+273) = 298 K   

Q: b. You start with 2.5L of a KNO3 stock solution and wish to prepare 10.0 L of 1.5 M  KNO3. What mola...

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Q: Name the highlighted chemical group in each molecule. Lewis structure name of highlighted group H :C...

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Q: 4. Most monosaccharides and disaccharides undergo fermentation in the presence of yeast. What are th...

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Q: Consider the following reaction, where Kc = 0.658 at a particular temperature: N204(g) = 2 NO2(g) Su...

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Q: A metal crystallizes in a face-centered cubic lattice. The radius 3 the atom is 196 pm and the densi...

A: Given that, radius, r= 196 pm  Type of lattice= face centred cubic  Volume = ?  

Q: What are the tissue sources of Alkaline phosphatase? 2.  What are Regan and Nagao isoenzymes?

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Q: Rank the following bases in order of INCREASING base strength: Base Kb I. F- 1.6е-11 II. (CH3)2NH 5....

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Q: What is the conjugate base of H3PO4? OA H2PO42- А. OB. HPO42- OC.OH O D.PO43- O E. H2PO4

A: Write conjugate base of H3PO4 ?

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Q: HN-CO Но- но, HO ÇI HO Но- Но- `NHẠC H H „NH2 N. H H H HN HOOC HO Он но OH -OH OH OH Teicoplanin

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Q: Write a mutlistep synthesis for the reaction below CH3 H.

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Q: What is the conjugate base of HPO42-? OA H3PO4 O B. PO43 H2PO4 O D.OH O E HPO4

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Q: Which of the following shows the changes as well as the mass relationship? A. Thermal energy B. Th...

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Q: If the reaction with the following potential energy diagram were catalyzed, the effect would be to: ...

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Q: Calculate AH for the reaction: 2 H2 (g) + 2 C (s) + + 02 (g) C2H5OH (1)or + 2 H2O (1) C2H5OH (1) + 2...

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Q: Question 18 Calculate the pH of a 0.0999 M solution of pyridine (C5H5N; Kb = 1.7 x 10-9) (the answer...

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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.