Which of the following cases has the maximum | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The size ratio of an anion to its corresponding neutral atom is determined by the increase in electron-electron repulsion upon adding an electron

Vedclass · Accepted Answer

$H^{-}/H$

Vedclass · Answer

(B) The size ratio of an anion to its corresponding neutral atom is determined by the increase in electron-electron repulsion upon adding an electron to the valence shell. For $H$, the addition of an electron to the $1s$ orbital doubles the electron cloud size, resulting in a very high ratio. Comparing the ratios: $1$. For $H^{-}/H$, the radius increases from $37 	ext{ pm}$ to $208 	ext{ pm}$ (ratio $\approx 5.6$). $2$. For $O^{-}/O$, the radius increases from $66 	ext{ pm}$ to $140 	ext{ pm}$ (ratio $\approx 2.1$). $3$. For $F^{-}/F$, the radius increases from $64 	ext{ pm}$ to $133 	ext{ pm}$ (ratio $\approx 2.0$). $4$. For $Na^{-}/Na$, the ratio is significantly smaller as the electron enters a new shell but the nuclear charge is high. Thus, the maximum ratio is observed for $H^{-}/H$.

Which of the following cases has the maximum size ratio of anion to neutral atom?

Similar Questions

What do atomic radius and ionic radius mean? Describe them.

The set representing the correct order of ionic radius is

Which of the following has the largest ionic radius?

In $Cl_2$, the van der Waals radius is $180 \ pm$. What is the distance between the two atoms (in $pm$)?

Among the elements $Li$,$N$,$C$ and $Be$,the one with the largest atomic radius is

Vedclass Test Series

Exam Paper Generator

Online Exam Module