KCET · Chemistry · Structure of Atom
Impossible orbital among the following is
- A \(3 f\)
- B \(2 p\)
- C \(4 d\)
- D \(2 s\)
Answer & Solution
Correct Answer
(A) \(3 f\)
Step-by-step Solution
Detailed explanation
According to Bohr - Burry's scheme, Maximum number of \(\mathrm{e}^{-}\)in 3 rd orbital \(=3 \mathrm{n}^{2}\)
\[
=3(3)^{2}=18
\]
and maximum number of \(\mathrm{e}^{-}\)in
s-subshell \(=2\)
p-subshell \(=6\)
d-subshell \(=10\)
f-subshell \(=14\)
Therefore, \(18 \mathrm{e}^{-}\)present in 3rd orbital enter in s, \(\mathrm{p}\) and \(\mathrm{d}\) subshell. Thereafter, there is no \(\mathrm{e}^{-}\) available for f-subshell. That's why \(3 \mathrm{f}\) subshell is not possible.
\[
=3(3)^{2}=18
\]
and maximum number of \(\mathrm{e}^{-}\)in
s-subshell \(=2\)
p-subshell \(=6\)
d-subshell \(=10\)
f-subshell \(=14\)
Therefore, \(18 \mathrm{e}^{-}\)present in 3rd orbital enter in s, \(\mathrm{p}\) and \(\mathrm{d}\) subshell. Thereafter, there is no \(\mathrm{e}^{-}\) available for f-subshell. That's why \(3 \mathrm{f}\) subshell is not possible.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Dalton's law of partial pressure is applicable to which one of the following systems?KCET 2007 Easy
- One mole of oxygen at \(273 \mathrm{~K}\) and one mole of sulphur dioxide at \(546 \mathrm{~K}\) are taken in two separate containers, then,KCET 2007 Easy
- For a reaction, \(\mathrm{A}+\mathrm{B} \rightarrow\) products, the rate of the reaction at various concentrations are given below
The rate law for the above reaction isKCET 2012 Easy - Statement I: Staggered conformation of ethane is more stable than the eclipsed conformation.
Statement II: The torsional strain in staggered conformation is more.
Read the above statements and choose the correct answer from the options given below.KCET 2026 Easy - The hydrolysis of optically active \( 2 \)-bromobutane with aqueous \( \mathrm{NaOH} \) result in the formation ofKCET 2015 Easy
- Which is the most suitable reagent for the following conversion ?
KCET 2021 Easy
More PYQs from KCET
- Area of the region bounded by the curve \( y=\cos x, x=0 \) and \( x=\pi \) isKCET 2017 Easy
- \(\tan ^{-1}\left[\frac{1}{\sqrt{3}} \sin \frac{5 \pi}{2}\right] +\sin ^{-1}\left[\cos \left(\sin ^{-} \frac{\sqrt{3}}{2}\right)\right]\) is equal toKCET 2021 Easy
- A better reagent to oxidise primary alcohols into aldehyde isKCET 2023 Easy
- In a system of two crossed polarisers, it is found that the intensity of light from the second
polariser is half from that of first polariser. The angle between their pass axes isKCET 2017 Medium - \( \left[\mathrm{Fe}\left(\mathrm{NO}_{2}\right)_{3} \mathrm{Cl}_{3}\right] \) and \( \left[\mathrm{Fe}(\mathrm{O}-\mathrm{NO})_{} \mathrm{Cl}_{3}\right] \) showsKCET 2018 Easy
- The compound which forms acetaldehyde when heated with dilute \(\mathrm{NaOH}\), isKCET 2009 Medium