Given below are two statements:Statement I: T | vedclass

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

Question

(A) The first ionization energy $(IE_1)$ trend for group $14$ elements is $C > Si > Ge > Sn < Pb$.Statement $I$: The $IE_1$ of $Pb$ $(715 \ kJ/mol)$ i

Vedclass · Accepted Answer

Statement $I$ is true but Statement $II$ is false

Vedclass · Answer

(A) The first ionization energy $(IE_1)$ trend for group $14$ elements is $C > Si > Ge > Sn Statement $I$: The $IE_1$ of $Pb$ $(715 \ kJ/mol)$ is greater than that of $Sn$ $(708 \ kJ/mol)$ due to the poor shielding effect of $4f$ and $5d$ electrons (lanthanoid contraction),which increases the effective nuclear charge. Thus,Statement $I$ is true.Statement $II$: The $IE_1$ of $Ge$ $(761 \ kJ/mol)$ is less than that of $Si$ $(786 \ kJ/mol)$ because $Si$ is smaller than $Ge$. Thus,Statement $II$ is false.Therefore,Statement $I$ is true but Statement $II$ is false.

Given below are two statements:
Statement $I$: The first ionization energy of $Pb$ is greater than that of $Sn$.
Statement $II$: The first ionization energy of $Ge$ is greater than that of $Si$.
In the light of the above statements,choose the correct answer from the options given below:

Similar Questions

Amongst the elements with the following electronic configurations,which one of them may have the highest ionisation energy?

The first ionisation enthalpies for three elements are $1314$,$1680$ and $2080 \, kJ \, mol^{-1}$,respectively. The correct sequence of the elements is

Which of the following electronic configurations has the highest ionization enthalpy?

The first ionisation potential $(IP)$ of the elements $Na$,$Mg$,$Si$,$P$,$Cl$ and $Ar$ are $5.14$,$7.65$,$8.15$,$10.49$,$12.97$ and $15.76 \ eV$,respectively. The $IP$ (in $eV$) of $K$ is closest to

The first ionization enthalpy of the following elements are in the order:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Given below are two statements:Statement $I$: The first ionization energy of $Pb$ is greater than that of $Sn$.Statement $II$: The first ionization energy of $Ge$ is greater than that of $Si$.In the light of the above statements,choose the correct answer from the options given below: