(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 →

${}_{24}Cr$ has configuration $3d^5\,4s^1$ instead of $3d^4\,4s^2$ because of

Medium

View Solution

Which of the following sets of quantum numbers is consistent with the rules of quantum mechanics?

Medium

View Solution

An electron has principal quantum number $n = 3$. The number of its $(i)$ sub-shells and $(ii)$ orbitals would be respectively:

Easy

View Solution

The maximum number of electrons that can be filled in the shell with the principal quantum number $n=3$ is

MediumKVPY 2017

View Solution

Which of the following statement$(s)$ is/are wrong?

Medium

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

${}_{24}Cr$ has configuration $3d^5\,4s^1$ instead of $3d^4\,4s^2$ because of

Which of the following sets of quantum numbers is consistent with the rules of quantum mechanics?

An electron has principal quantum number $n = 3$. The number of its $(i)$ sub-shells and $(ii)$ orbitals would be respectively:

The maximum number of electrons that can be filled in the shell with the principal quantum number $n=3$ is

Which of the following statement$(s)$ is/are wrong?

Vedclass Test Series

Exam Paper Generator

Online Exam Module