Bromine compounds have been known and used for centuries. The deeppurple color that symbolized imperial power in ancient Rome originatedwith the compound dibromoindigo, which was extracted in tiny quantitiesfrom purple snails (about 8000 snails per gram of compound). What colorand maximum wavelength of absorbed light would give a deep purple (violet) color?

Q: Draw the photoelectron spectrum of titanium

A: Answer: The diagram of X-ray photoelectron spectrum of titanium is shown where Ti implanted material…

Q: wavelength

A:

Q: What is the diagonal effect? What is the basic reason for the diagonal relation of elements? Which…

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Q: Draw and explain the photoelectron spectrum of CO.

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Q: It requires 945.0 kJ/mol to break N2 molecules into atoms. Calculate the maximum wavelength of light…

A:

Q: In the lab, you should have observed that the reactivity of metals increased down a group. Explain…

A: ELECTRON SHIELDING : It is the phenomenon by the virtue of which the attraction of electrons by…

Q: Match the electron configurations here with the elements to which they belong. Fe: [Ar]4s²3dº Nd: B:…

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Q: The ionization energies of the alkali metals (i.e., the energies required to remove an outer…

A: Ionization energy:  It is the energy required to remove an electron from an atom in gas phase.  The…

Q: Predict the trend in values of Slater's  constant of the every first element of each group of p…

A:

Q: The energy required to break one mole of hydrogen bonds in H2 (g) is 436 kJ. What is the longest…

A: Energy of photon is given by  E=hc÷lmbda Photon is defined as energy of Photon which is required to…

Q: Write the balanced chemical equation for the reaction of scandium oxide with nitric acid?

A: The given reactants are Scandium oxide and Nitric acid.

Q: A naturally occurring fblock element, M, forms an anionic nitrate [M(NO3)6]² , M(acac)4 and an oxide…

A: Those elements of the periodic table which have their last electrons in the f-orbital are known as…

Q: Using Slater's rules as evidence, explain why chromium deviates from the Aufbau Principle

A: Atomic number of Chromium is 24. So chromium will have 24 electrons. So the electronic cofiguration…

Q: Calculate the energy (in eV) of the process: Br(g) + Na(g) → Br- + Na . Data: Ionization energy of…

A: The given process involves the ionization of gaseous sodium atom to sodium ion and gain of electron…

Q: What is the maximum wavelength capable of breaking a C=C bond with a bond strength of 614 kJ/mol?

A: Here we are required to find the wavelength capable of breaking a C=C bond with strength of 614…

Q: electron motion in metals. {

A: Metal are ductile, lustrous, malleable in nature. Metal have a tendency to lose electrons. Therefore…

Q: out of s,p,d,f orbitals which has maximum shielding effect?

A:

Q: Calculate the fraction of atom sites that are vacant for silver at 687°C. Assume an energy for…

A: Given,  Temperature = 687◦c Energy for vacancy formation = 0.63 eV / atom

Q: What is the energy of light with a wavelength of 5120 pm?

A: E= h C/λ GIVEN 152O pm

Q: false?

A:

Q: If Zeff for the Na 3s orbital is 2.51, while for the Mg 3s orbital it is 3.31, by what ratio do you…

A:

Q: A) Identify which atom has the greater electron affinity and explain why: Si or Sn?

A:

Q: what type of environment will an N atom reside in a natural diamond

A: Diamond is an allotrope of carbon. It is very hard material use for drilling.  Natural diamond is a…

Q: Which group 3 element is the most reactive? Express your answer as a chemical symbol.   B. An oxide…

A: To answer questions about elements-

Q: a. Describe how lanthanides can be used in the medical application described in the previous…

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Q: Atomic spectroscopy requires the atomization of a sample, which involves nebulization and eventually…

A: Yes it is very true that Atomic Absorption Spectroscopy requires the conversion of the sample to…

Q: A) Determine the numbers of vacancy per cubic meter for iron at 100 c , the energy for vacancy…

A: All real solids undergo some imperfections. Impurities are often added to improve their properties .…

Q: Calculate the energy in kJ of 0.0130 moles of photon of light with wavelength of 640 nm. h = 6.626 x…

A: Correct Option :  2.43 kJ

Q: A N atom has a shielding constant of 3.17 What is the nuclear charge of a valence electron in a N…

A:

Q: Compare and contrast the characteristics of the theoretical materials of metallic materials (iron)…

A: Non destructive testing is method used by industry to evaluate properties of materials, components,…

Q: Chemistry Question

A:

Q: If the molecule XY, which has an enthalpy of ionization of 1,500 kJ/mol as per the reaction below,…

A: Given the ionization enthalpy of the molecule, XY = 1500 kJ/mol First, we have to convert the…

Q: Calculate the radius of the copper atom, given that copper has an fcc crystalstructure, a density of…

A: Given data Atomic mass  = 63.55 g/mole density = 8.89 g/cm3  Copper has FCC Unit cell  Standard…

Q: Each metal has a different energy at which it ejects electrons. At lower energy, electrons are not…

A: Answer is True.

Q: 1 The chemical element X lies in the 14th group and 2nd period of the periodic table of chemical…

A:

Q: Give the general formula for atomic configuration of p block elements? Give examples of elements…

A: The general valence shell configuration of the p block elements is ns2 np1-6. As we move from the…

Q: The laser beam used for LASIK eye surgery has a wavelength of 193 nm. Calculate the frequency of…

A: Given -> Wavelength= 193 nm = 193 × 10-9 m  Energy of pulse = 1.0 mJ = 1.0 × 10-3 J (1mJ = 10-3J)…

Q: 5. Ytterbium (Yb) has an electron configuration that is an exception to the Aufbau Principle. Based…

A: The  Concept used in taken from INNER TRANSITION ELEMENTS of Inorganic chemistry. First of all we…

Q: Investingate and report the uses of ferromagnetic oxides in magnetic recording tapes

A: Recording tapes have a thin plastic base material and this base have a coating of ferric oxide…

Q: ) Estimate the atomic radii (in nm) of silver and vanadium (compare the estimates with the reported…

A:

Q: A complex absorbs photons with an energy of 4.5 X 10-19 What is the wavelength of these photons?

A: Given:Energy = 4.5 × 10-19 J

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.