Intro Spectroscopy
5th Edition
ISBN: 9781305221796
Author: PAVIA
Publisher: Cengage
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The atomic radii of a divalent cation and a monovalent anion are 0.074 nm and 0.128 nm, respectively.
Calculate the force of attraction between these two ions at their equilibrium interionic separation (i.e., when the ions just touch one another) and the force of repulsion at the same distance.
Why do we need to find the derivative then if we only use 6.5 paired with sin and 2.3 paired with cos? When we find the derivative, do they not switch?
The CO molecule has a dipole moment of 0.480x10-30 C m. Given that its equilibrium bond distance is 212 pm, what is the magnitude of the effective charge that causes this dipole moment? Give your answer in units of the charge of an electron
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- The Madelung constant for the NaCl structure may be found by summing an infinite alternating series of terms giving the electrostatic potential energy between an Na+ ion and its 6 nearest Cl neighbors, its 12 next-nearest N+ neighbors, and so on (see Fig. 12.1a). (a) From this expression, show that the first three terms of the infinite series for the Madelung constant for the NaCl structure yield = 2.13. (b) Does this infinite series converge rapidly? Calculate the fourth term as a check.arrow_forwardis the tranfer or sharing valence electrons different than bonding. If so, how?arrow_forwardCompute the magnitude of the electrostatic attraction energy between a silver cation (radius 129 pm) and a sulfide anion (radius 170 pm). Give your answer in al. Note that magnitude means "absolute value" i.e. answer without arithmetic +/- sign.arrow_forward
- Determine the strength of the electric field needed to induce a dipole moment of 1.2 mD in a molecule with a polarizability of 2.31 x 10-40 J-1 C2 m2. Express your answer in units of MV/m with two decimals.arrow_forwardDetermine the distance, r, between a Na and an Cl ion if the attractive force is 1.025 x,10-10 N, given that e = 1.602 × 10−19 C) and 8.85 x 10-12 F/m.arrow_forwardqspt15 A pair of ions consist of charge +3 and -3 are separated by a distance of 0.25 nm and attracted by ionic bonding. Calculate the attraction force. given: electronic charge, e = 1.6 x 10-19 C, Coulomb’s constant, k = 9 x 109 Nm2C-2 permittivity of free space, Ԑ0 = 8.85 x 10-12 C2 N-1 m-2arrow_forward
- Calcu late the energy of Coulombic repulsion between two hydrogen nuclei at their equilibrium separation in H2 (74.1 pm). Express your answer in ki lojoules per mole. The result is the energy that must be overcome by the attraction from the electrons that form the bond.arrow_forwardWrite a conclusion about PN Junctionarrow_forwardSuppose that the wavenumber of the J = 1 ← 0 rotational transition of 1H81Br considered as a rigid rotor was measured to be 18.20 cm-1, what is (a) the moment of inertia of the molecule? _____________kg-m2 (b) the bond length? ________________Angstroms (Given the isotopic masses:(m(79Br) = 78.9183 amu, m(81Br) = 80.9163 amuarrow_forward
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