(B) For $P$ $(Z=15)$: $1s^2 2s^2 2p^6 3s^2 3p^3$. Total $s$-electrons = $2+2+2 = 6$. Total $p$-electrons = $6+3 = 9$. Ratio = $6/9 = 2/3$.For $Ca$ $(Z

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

(B) For $P$ $(Z=15)$: $1s^2 2s^2 2p^6 3s^2 3p^3$. Total $s$-electrons = $2+2+2 = 6$. Total $p$-electrons = $6+3 = 9$. Ratio = $6/9 = 2/3$.For $Ca$ $(Z=20)$: $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2$. Total $s$-electrons = $2+2+2+2 = 8$. Total $p$-electrons = $6+6 = 12$. Ratio = $8/12 = 2/3$.Thus,the pair is $P$ and $Ca$.

Class 11 Chemistry Structure of Atom Quantum number, Electronic configuration and Shape of orbitals

Medium

Identify the pair of elements in which the ratio of the number of $s$-electrons to $p$-electrons is $2:3$.

TS EAMCET 2024 All TS EAMCET

A
$P, Mg$
B
$P, Ca$
C
$O, Mg$
D
$O, S$

Explore More

Browse All

Question Bank

All Subjects

Class 11 Questions

Class 11

Chemistry Questions

Chapter

Structure of Atom

Subtopic

Quantum number, Electronic configuration and Shape of orbitals

Previous Year

TS EAMCET 2024 Paper All TS EAMCET years →

Which of the following represents the correct set of four quantum numbers for a $4d$ electron?

Easy

View Solution

From the following sets of quantum numbers, which set is possible?

EasyTS EAMCET 2020

View Solution

The number of radial nodes of $3s$ and $2p$ orbitals are respectively.

MediumAP EAMCET 2013

View Solution

If an atom has $13$ electrons in the $M$ shell and $1$ electron in the $N$ shell,then the number of unpaired electrons in that atom is ...

Medium

View Solution

The total number of electrons that can be accommodated in all the orbitals having principal quantum number $n = 2$ and azimuthal quantum number $l = 1$ is

Easy

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

Identify the pair of elements in which the ratio of the number of $s$-electrons to $p$-electrons is $2:3$.

Similar Questions

Which of the following represents the correct set of four quantum numbers for a $4d$ electron?

From the following sets of quantum numbers, which set is possible?

The number of radial nodes of $3s$ and $2p$ orbitals are respectively.

If an atom has $13$ electrons in the $M$ shell and $1$ electron in the $N$ shell,then the number of unpaired electrons in that atom is ...

The total number of electrons that can be accommodated in all the orbitals having principal quantum number $n = 2$ and azimuthal quantum number $l = 1$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module