ABC26IN0074 · Chemical Bonding
Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Chemical Bonding – General · Exam: CSIR-NET DEC 2019 · Marks: 2 · Difficulty: Medium
Consider the following statements for Allred-Rochow electronegativity ($\chi$AR): (i) $\chi$AR is directly proportional to $\mathrm{Z_{eff}}$
(ii) $\chi$AR is inversely proportional to $\mathrm{Z_{eff}}$
(iii) $\chi$AR is inversely proportional to r(covalent).
(iv) $\chi$AR is inversely proportional to $\mathrm{r^{2}}$(covalent).
The correct statements are
(a)(i) and (iv)
(b)(ii) and (iv)
(c)(i) and (iii)
(d)(ii) and (iii)
Answer
Explanation
Allred-Rochow electronegativity ($\chi$AR): \[ \chi\text{AR} = \frac{3590\,z^{*}}{r^{2}} + 0.744 \]
where, r = covalent radius (in pm), $z^{*}$ = effective nuclear charge Open in whiteboard · Browse this chapter in the app