Question

9. 

For bromine the IE/EA ratio = . Electronegativety of bromine is 2.8. on Mulliken’s scale its electron affinity in kJ/mol is,

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Answer 1

Answer:

the answer for your question is 1.29kg/mol

Answer 2

Your question is incomplete. Please check below the full content.

For bromine the IE/EA ratio = 10/3. Electronegativity of bromine is 2.8 on Mulliken’s scale, its electron affinity in kJ/mol is,

Concept:

• Electronegativity (EN)
• Electron affinity (EA)
• Ionisation enthalpy (IE)
• Mullikken's scale = The arithmetic mean of the IE and EA values
• EN = (IE+EA)/ 2

Given:

• The element given is bromine
• IE/EA = 10/3
• EN = 2.8
• EN = (IE+EA)/ 2

Find:

• The electron affinity of bromine (EA)

Solution

We know that EN = IE+EA/2

2EN = IE +EA

EN = 2.8

2(2.8) = IE + EA

5.6 = IE + EA

IE/EA = 10/3

3IE = 10 EA

IE = 10/3 EA

5.6 = IE + EA

5.6 = 10/3 EA + EA

5.6 = 13/3 EA

5.6 * 3/13 = EA

EA = 16.8/13

EA = 1.30

The electron affinity of bromine is 1.30 kJ/mol.

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