Consider the following.Statement-I : The orde | vedclass

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

Question

(C) Statement-$I$ is correct. Due to the poor shielding effect of $d$ and $f$ electrons in $Tl$,the effective nuclear charge increases,resulting in a

Vedclass · Accepted Answer

Statement-$I$ is correct,but statement-$II$ is not correct

Vedclass · Answer

(C) Statement-$I$ is correct. Due to the poor shielding effect of $d$ and $f$ electrons in $Tl$,the effective nuclear charge increases,resulting in a higher electronegativity for $Tl$ compared to $Al$ and $In$. The order is $B (2.04) > Tl (1.8) > Al (1.61) > In (1.5)$.Statement-$II$ is incorrect. Boric acid ($H_3BO_3$ or $B(OH)_3$) is not a protonic acid (it does not release $H^+$ ions). Instead,it acts as a Lewis acid by accepting an $OH^-$ ion from water to form $[B(OH)_4]^-$,releasing $H^+$ ions from the water molecule.

Consider the following.
Statement-$I$ : The order of electronegativity of $B, Al, In, Tl$ is $B > Tl > Al > In$.
Statement-$II$ : Boric acid is a weak protonic acid.
The correct answer is

Similar Questions

Which among the following elements has the highest electronegativity?

Which of the following bonds is the most polar?

Electronic configuration of four elements $A, B, C$ and $D$ are given below $:$
$(A) 1s^2 2s^2 2p^3$
$(B) 1s^2 2s^2 2p^4$
$(C) 1s^2 2s^2 2p^5$
$(D) 1s^2 2s^2 2p^2$
Which of the following is the correct order of increasing electronegativity $(Pauling's scale)$?

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?

Which of the following sets of atoms is arranged in order of increasing electronegativity?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Consider the following.Statement-$I$ : The order of electronegativity of $B, Al, In, Tl$ is $B > Tl > Al > In$.Statement-$II$ : Boric acid is a weak protonic acid.The correct answer is