Homework Answers
Given EN= -A/r + B/rn
Hence d(EN/dr) =A/r2 – nB/r(n+1) = 0 for minimum energy, r becomes r0 ( the minium interatomic spacing
A/ro2 = nB/ro(n+1)
ro (n+1)/ro2= nB/A
ro(n+1-2)= (nB/A )
ro= (nB/A )1/(n-1)
EN( Minimum)= -A/(nB/A)1/(n-1) +B/(nB/A)n/(n-1)
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1)
2)
3)
4)
5)
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Problem 2.18 The net potential energy between two adjacent ions, EN, may be represented by Where A, B, and n are constants whose values depend on the particular ionic system Calculate the bonding energy Eo in terms of the parameters A, B, and n using the following procedure: (1) Differentiate EN with respect to r, and then set the resulting expression equal to zero, since the curve of Ev versus r is a minimum at Eg. (2) Solve for r...
Answer to Problem 2.19
Bonding Forces and Energies 2.13 Calculate the force of attraction between a Ca2+ and an O on the centers of which are separated by a distance of 1.25 nm. 2.14 The net potential energy between two adja- cent ions, EN, may be represented by the sum of Equations 2.8 and 2.9; that is, A B Calculate the bonding energy Eo in terms of the parameters A, B, and n using the follow ing procedure: 1. Differentiate...
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Question blow and I need a, b and c, please help me.
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I. Collaborative I re encouraged to work with fellow students, as well as to ask me questions For problems in this section, you a by email phone, or in person. Short Answer (5 points) No justification is required for the answer to the following question. Suppose J-J) is any quantum mechanical angular momentum - ie. that satisfies J,j, ih and cyclic permutations thereof. Suppose ψ ls a simultaneous eigenstate of both j-at tjz and.., i e , such that j2ψ...
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1)
2)
3)
4)
5)
Use the molecular orbital energy diagram below to answer the questions about bond order for the negative ion By. Number of Bonding Number of Antibonding B2 Valence Electrons Valence Electrons Bond Order This corresponds to: A. Single bond B. Double bond C. Triple bond D. Half of a bond E. Between a single and double bond F. Between a double and a triple bond G. No bond, B2" does not form. boron MO's boron 2p...
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