Correct expression of "Allred and Rochow's" scale is - Vidyadip

MCQ

Correct expression of "Allred and Rochow's" scale is

A
Electronegativity $= 0.744 \, \frac{Z_{eff.}}{r^2} + 0.359$
B
Electronegativity $= 0.359 \, \frac{r^2}{Z_{eff.}} + 0.744$
C
Electronegativity $= 0.359 \, \frac{Z_{eff.}}{r} + 0.744$
✓
Electronegativity $= 0.359 \, \frac{Z_{eff.}}{r^2} + 0.744$

✓

Answer

Correct option: D.

Electronegativity $= 0.359 \, \frac{Z_{eff.}}{r^2} + 0.744$

d
$(d)$ According to Allred and Rochow scale
$(c)\, EN_{AR} = 0.359 \frac{Z_{eff.}}{r} +0.744$ ($r$ : radius in $\overset{o}{\mathop{A}}\,$)

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