Download App

STD 11 - 2. structure of atom — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 2. structure of atom4 Marks
MCQ
Assertion :A spectral line will be observed for a $2p_x-2p_y$ transition.
Reason : The energy is released in the form of wave of light when electron drops from $2p_x$ to $2p_y$ orbital.
  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • B
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is correct but Reason is incorrect.
  • ✓
    If both the Assertion and Reason are incorrect.
✓

Answer

Correct option: D.
If both the Assertion and Reason are incorrect.
d
In this case both assertion and reason are false. Both $2p_x$ and $2p_y$ orbitals have equal energy ($2p$ orbitals are degenerate), there is no possibility of electron transition and hence no energy is released and thus no spectral line will be observed.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

In which transition minimum energy is emitted
→
Product/s not obtained in the following reaction is 
→
The number of elements present in fifth period is
→
Among the following the aromatic compound is
→
The $pK_a$ of weak acid $(HA)$ is $4.5$ . The $pOH$ of an aqueous buffered solution of $HA$ in which $50\%$ of the acid is neutralised in its titration with strong base $(BOH)$ is
→
Consider one $He^+$ ion is in excited state $(n = 5)$ . Which of the following observations hold true as per the Bohr's model
→
The lowest $O - O$ bond length in the following molecule is
→
Which of the following is acidic
→
According to Le-chatelier's principle, which of the following factors influence a chemical system
→
$0.5\,N$ solution of a salt placed between two platinum electrodes $2.0\,cm$ apart and of area of cross section $4.0\,cm^2$ has a resistance of $25\,ohms$ . Calculate the equivalent conductivity of solution ................. ${\Omega ^{ - 1}}{\rm{c}}{{\rm{m}}^2}{\rm{e}}{{\rm{q}}^{ - 1}}$
→