1) What is the magnitude of the energy of a bond formed between a potassium (K+)
ID: 837777 • Letter: 1
Question
1) What is the magnitude of the energy of a bond formed between a potassium (K+) cation and an iodide (I-) anion? The ionic radii of K+ and I-?, are 152 pm and 206 pm, respectively. Assume the Born exponent n is 10. Please report your answer in joules.
2) Calculate the magnitude of the cohesive energy of potassium iodide (KI). The ionic radii of K+ and I-?, are 152pm and 206 pm, respectively. Assume the Born exponent n is 10. Assume a Madelung constant of 1.7. Please report your answer in kJ/mol.
Explanation / Answer
BE= (Z*e^2/4*pi*epsilon_0*r0)*(1-1/n) its the right formula.
be carefully with the exponent
z its equal to q1*q2 of the potassium and iodine
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