Which of the following order is correct for t | vedclass

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

Question

(C) $1$. Option $A$: $S^{2-}, Cl^{-}, K^{+}, Ca^{2+}$ are isoelectronic species with $18$ electrons. Ionisation energy increases as the nuclear charge

Vedclass · Accepted Answer

$B > Al > Ga > In > Tl$ (Electronegativity)

Vedclass · Answer

(C) $1$. Option $A$: $S^{2-}, Cl^{-}, K^{+}, Ca^{2+}$ are isoelectronic species with $18$ electrons. Ionisation energy increases as the nuclear charge $(Z)$ increases. The order should be $Ca^{2+} > K^{+} > Cl^{-} > S^{2-}$. Thus,$A$ is incorrect.$2$. Option $B$: The $2^{nd}$ ionisation energy involves removing an electron from a cation. For $C^{+}$,$N^{+}$,$O^{+}$,$F^{+}$,the order is $C $3$. Option $C$: Electronegativity generally decreases down a group. The order $B > Al > Ga > In > Tl$ is correct as it follows the group trend.$4$. Option $D$: Ionic radius for isoelectronic species decreases as nuclear charge increases. The correct order is $Na^{+} > Mg^{2+} > Al^{3+}$ and $Li^{+} > Be^{2+}$. The given order is incorrect.

Which of the following order is correct for the property mentioned in brackets?

Similar Questions

An element which never has a positive oxidation number in any of its compounds is:

Given that the ionization potential and electron gain enthalpy of chlorine are $13 \ eV$ and $4 \ eV$ respectively. The electronegativity of chlorine on the Mulliken scale is approximately equal to: (in $eV$)

Let electronegativity,ionisation energy and electron affinity be represented as $EN$,$IP$ and $EA$ respectively. Which one of the following equations is correct according to Mulliken?

The electronegativity values of $F, Cl, Br,$ and $I$ are $4.0, 3.0, 2.8,$ and $2.5$ respectively. Which hydrogen halide has the highest percentage of ionic character?

Which of the following elements never shows a positive oxidation number?

Vedclass Test Series

Exam Paper Generator

Online Exam Module