Three biological ly important diatomic species. eitherbecause they promote or inhibit life. are (a) CO. (b) NO. and(c) CN-. The first binds to haemoglobin. the second is a neurotransmitter. and the third interrupts the respiratory electrontransfer chain. Their biochemical action is a reflection of theirorbital structure. Deduce their ground-state electron configurations. For heteronuclear diatomic molecules. a good firstapproximation is that the energy level diagram is much thesame as for homonuclear diatomic molecules

Three biological ly important diatomic species. eitherbecause they promote or inhibit life. are (a) CO. (b) NO. and(c) CN-. The first binds to haemoglobin. the second is a neurotransmitter. and the third interrupts the respiratory electrontransfer chain. Their biochemical action is a reflection of theirorbital structure. Deduce their ground-state electron configurations. For heteronuclear diatomic molecules. a good firstapproximation is that the energy level diagram is much thesame as for homonuclear diatomic molecules

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter3: Atomic Shells And Classical Models Of Chemical Bonding

Section: Chapter Questions

Problem 87AP: At large interatomic separations, an alkali halide molecule MX has a lower energy as two neutral...

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At large interatomic separations, an alkali halide molecule MX has a lower energy as two neutral atoms, M+X ; at short separations, the ionic form (M+)(X) has a lower energy. At a certain distance, Rc , the energies of the two forms become equal, and it is near this distance that the electron will jump from the metal to the halogen atom during a collision. Because the forces between neutral atoms are weak at large distances, a reasonably good approximation can be made by ignoring any variation in potential V(R) for the neutral atoms between Rc and R= . For the ions in this distance range, Rc is dominated by their Coulomb attraction. (a) Express Rc for the first ionization energy of the metal M and the electron affinity of the halogen X. (b) Calculate Rc for LiF, KBr, and NaCl using data fromAppendix F.
For each of the following pairs of atoms, state which youexpect to have the higher first ionization energy: (a) Rb orSr; (b) Po or Rn; (c) Xe or Cs; (d) Ba or Sr.
At large interatomic separations, an alkali halide moleculeMX has a lower energy as two neutral atoms, M + X; atshort separations, the ionic form (M+)(X-) has a lowerenergy. At a certain distance, Rc, the energies of the twoforms become equal, and it is near this distance that theelectron will jump from the metal to the halogen atom during a collision. Because the forces between neutral atomsare weak at large distances, a reasonably good approximation can be made by ignoring any variation in potentialV(R) for the neutral atoms between Rc and R - `. For theions in this distance range, V(R) is dominated by theirCoulomb attraction.(a) Express Rc for the first ionization energy of the metalM and the electron affinity of the halogen X.(b) Calculate Rc for LiF, KBr, and NaCl using data fromAppendix F.
11)Explain the given ionization energy for each pair using electron configurations. (12(Be)l1(B), I1(N)>l1(O) ).
For each of the following pairs of atoms, state which youexpect to have the higher first ionization energy: (a) Bi orXe; (b) Se or Te; (c) Rb or Y; (d) K or Ne.
For each of the following pairs of atoms, state which youexpect to have the greater electron affinity: (a) Xe or Cs;(b) Pm or F; (c) Ca or K; (d) Po or At.
For each of the following pairs of atoms, state which you expect to have the higher first ionization energy. Briefly explain your reasoning: (a) Bi or Xe; (b) Se or Te; (c) K or Ne;
Three biologically Important diatomic species,either because they promote or inhibit life, are (a) CO, (b) NO, and (c) CN−. The first binds to hemoglobin, the second is a chemical messenger, and the third interrupts the respiratory electron transfer chain. Their biochemical action is a reflection of their orbital structure. Deduce their ground-state electron configurations using sigma and pi. (Draw MO). Show how you get electron configuration below using MO?
(a) Imagine that a Born-Haber cycle is being constructed by a colleague, to determine the lattice energy of a hypothetical magnesium halide salt, where X is the halide ion. The colleague makes the following list: First and second ionisations of Mg; 737 and 1451 Sublimation energy of Mg; 147 Electron affinity of X; 200 Atomisation enthalpy of X₂; 400 Enthalpy of formation of MgX₂; -450 2+ 2e+ Mg(+2X (8) b 2+ 2e + Mg( + X2 (8) a + Mg(g) + X₂ (8) 1451 Mg(g) + X₂ (8) Mg(s) + X2 (8) f 147 2+ Mg(g) +2X(g) MgX2 (s) d Sadly the colleague becomes discouraged and leaves the document incomplete, simply drawing boxes around unknown quantities. Complete the calculation by writing down the boxed quantities a-f on your answer paper. You may assume that the units are kJ mol-¹.
he atomic radii of two hypotheticalM2+and N2ions are 0.070 and 0.160 nm, respectively.(a)Calculate the attractive energy between these two ions at r= 0.28nm, ris the separation distance between two ions;(b)Calculate the attractive forcebetween these two ions at r= 0.28nm, ris the separation distance between two ions;(c)Calculate the force of attraction between these two ions at their equilibrium interionic separation (i.e., when the ions just touch one another).(d)What is the force of repulsion at this same separation distance(i.e. their equilibrium interionic separation?
Sketch the shape and orientation of the following types oforbitals: (a) s, (b) Pz?
Define the following phenomena with reference to main group compounds: (a) inert pair effect