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Coulomb Energy for NaCl.pdf

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Rajput AbdulWaheed Bhatti

The document provides instructions to calculate the Coulomb energy for NaCl at its equilibrium separation. It states that the Coulomb energy at equilibrium is given by the equation Ueq = -1/4πε0(e2/R), where e is the elementary charge, ε0 is the vacuum permittivity, and R is the equilibrium separation distance between Na and Cl. It then provides the values to use in the calculation, resulting in a Coulomb energy of -8.9556 eV.

1
Calculate the Coulomb
energy for NaCl at its
equilibrium separation.
Helping Tools
No.1

3
No.2

5
No.3

6
Solution

7
2
0
We know that at equilibrium
separation Coulomb energy
is given as:
1
4
1.44 .
1.7476
0.281
8.9556
C
eq
e
U X
R
eV nm
nm
eV


= −
= −
= −

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Coulomb Energy for NaCl.pdf

1. 1 Calculate the Coulomb energy for NaCl at its equilibrium separation. Helping Tools No.1

7. 7 2 0 We know that at equilibrium separation Coulomb energy is given as: 1 4 1.44 . 1.7476 0.281 8.9556 C eq e U X R eV nm nm eV   = − = − = −