Question

Which of the following statements is true regarding Pauling and Mulliken scale of electronegativity?

• A. Pauling's electronegativity is obtained from bond energy parameters
• B. Mulliken's electronegativity is obtained from ionization energy and electron affinity of individual atoms
• C. Mulliken's electronegativity can be obtained by multiplying Pauling's electronegativity by 2.8
• D. All of the above

Answer 1

The correct option is D All of the above

Mulliken scale simply considers the electronegativity of an element as the average of the ionization potential and the electron affinity of that element. The EA and IE refer to the valence state of the element in a compound and not to the ground state of the atom.
Pauling scale is a numerical scale of electronegativities based on bond-energy calculations for different elements joined by covalent bonds.
Mulliken value is 2.8 times greater than the Pauling's value.
Hence all the statements are correct.