Chemistry - PERIODIC TABLE Question with Solution | TestHub
Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. For measurement of electronegativity, different types of scales were proposed. One such scale is Pauling scale which on the basis of hydrogen predicted the values of electronegativity of different elements. After that some other scales like Mulliken and Allred-Roschow scales were also proposed on the basis of ionization energy, electron affinity and size of various elements.
Which of the following relation is CORRECT.
Options:(select one or more)
Answer:
Solution:
(A) Pauling Scale:
Correct. This is the original formula proposed by Pauling using bond energies in kcal/mol.
(B) Mulliken Scale:
Correct. Mulliken scale is based on average of ionization energy (IP) and electron affinity (EA) in eV.
(C) Allred-Rochow Scale:
Correct. This scale considers effective nuclear charge and covalent radius.
(D) Allred-Rochow alternative:
Slightly incomplete, missing the constant as per the original formula.
Correct options: A, B, C
