COMEDK · Chemistry · 2. Structure of Atom
Which of the following statement is correct?
- A Azimuthal Quantum number explains about spatial orientation of orbital
- B Heisenberg uncertainty principle can be applied to all the objects and for macroscopic objects the uncertainty is extremely large
- C Photon has momentum as well as wavelength, but electrons do not have momentum and wavelength
- D In photoelectric effect if frequency \(\nu > \nu_o\), then photoelectrons are ejected with certain kinetic energy
Answer & Solution
Correct Answer
(D) In photoelectric effect if frequency \(\nu > \nu_o\), then photoelectrons are ejected with certain kinetic energy
Step-by-step Solution
Detailed explanation
The azimuthal quantum number (\(l\)) describes the shape of the orbital, whereas the magnetic quantum number (\(m_l\)) describes the spatial orientation of the orbital. Thus, the first statement is incorrect. The Heisenberg uncertainty principle applies to all objects, but for…
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
- From the given covalent compounds (A to F) identify the pair of molecules which have:
(i) Two lone pairs of electrons on the central atom.
(ii) One lone pair of electrons on the central atom.
A. \(\mathrm{SO}_2\)
B. \(\mathrm{ClF}_3\)
C. \(\mathrm{BF}_3\)
D. \(\mathrm{BrF}_5\)
E. \(\mathrm{XeF}_4\)
F. \(\mathrm{SF}_6\)COMEDK 2025 Medium - The photographic industry relies on the special light sensitive properties ofCOMEDK 2014 Easy
- The standard reduction potentials of \(\mathrm{Zn}\) and \(\mathrm{Ag}\) in water at \(298 \mathrm{~K}\) are,
\(\begin{aligned}
\mathrm{Zn}^{2+}+2 e^{-} \rightleftharpoons \mathrm{Zn}, & E^{\circ}=-0.76 \mathrm{~V} \\
\text { and } \quad \mathrm{Ag}^{+}+e^{-} \rightleftharpoons \mathrm{Ag} ; & E^{\circ}=+0.80 \mathrm{~V}.
\end{aligned}\)
Which of the following reactions take place?COMEDK 2013 Easy - Identify the complex which exhibits all 3 characteristics; paramagnetic; high spin configuration; octahedral geometryCOMEDK 2026 Medium
- The oxidation state of nickel in \(\left[\mathrm{Ni}\left(\mathrm{CO}_4\right)\right]\) isCOMEDK 2022 Easy
- For a reaction, \(A+B \longrightarrow C+D\),
If the concentration of \(A\) is doubled without altering the concentration of \(B\), the rate gets double(d)If the concentration of \(B\) is increased by nine times without altering the concentration of \(A\), the rate gets triple(d)The order of the reaction isCOMEDK 2018 Medium
More PYQs from COMEDK
- The probability of choosing randomly a number \(c\) from the set \(\{1,2,3, \ldots 9\}\) such that the quadratic equation \(x^2+4 x+c=0\) has real roots, isCOMEDK 2022 Medium
- The image of a point \(P(3,5,3)\) in the line \(\dfrac{x}{1}=\dfrac{y-1}{2}=\dfrac{z-2}{3}\) is \(P^{\prime}(a, b, c)\). Then \(a+b+c=\)COMEDK 2025 Medium
- \(\text { If a compound } \mathrm{X}_3 \mathrm{Y} \text { is } 60 \% \text { ionised in aqueous medium, what is its van't Hoff factor value? }\)COMEDK 2024 Medium
- \(6 \mathrm{~g}\) of urea is dissolved in \(90 \mathrm{~g}\) of water. Relative lowering of vapour pressure isCOMEDK 2019 Medium
- Evaluate \(\left[i^{22}+\left(\dfrac{1}{i}\right)^{25}\right]^3\)COMEDK 2022 Easy
- The number of real roots of the equation
\(x^{4}+\sqrt{x^{4}+20}=22\) isCOMEDK 2014 Easy