TS EAMCET · Chemistry · Structure of Atom
The energy (in eV) associated with the electron in the lst orbit of \(\mathrm{Li}^{2+}\) is
- A −122.4
- B -61.15
- C -30.5
- D -244.6
Answer & Solution
Correct Answer
(A) −122.4
Step-by-step Solution
Detailed explanation
Energy of an electron in hydrogen like species in \(n\)th shell is given by \[ E=-13.6 \frac{Z^2}{n^2} \mathrm{eV} \] where, \(Z=\) atomic number \(n=\) number of shell For electron in first orbit of \(\mathrm{Li}^{2+}\)…
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
- Match the following
List - 1 (Elements) List - 2 (Group) A Mn,Tc,Re I 12 B Zn,Cd,Hg II 4 C Ti,Zr,Hf III 17 D Ga,In,Tl IV 7 V 13
The correct answer isTS EAMCET 2025 Easy - Benzene reacts with -propyl chloride in the presence of anhydrous to give predominantlyTS EAMCET 2021 Hard
- The atomic numbers of elements \(A, B, C\) and \(D\) are \(Z-1, Z, Z+1\) and \(Z+2\), respectively. If ' \(B\) ' is a noble gas, choose the correct answers from the following statements (1) ' \(A\) ' has higher electron affinity (2) ' \(C\) ' exists in +2 oxidation state (3) ' \(D\) ' is an alkaline earth metalTS EAMCET 2008 Easy
- The correct order of reactivity of hydrogen halides with propene isTS EAMCET 2020 Medium
- If the sum of bond orders of \(\mathrm{O}_2^{-}\)and \(\mathrm{O}_2^{2-}\) is \(x\), then bond order of \(\mathrm{O}_2^{2+}\) will beTS EAMCET 2025 Medium
- Pick the correct statement. I. Borax is white crystalline solid containing \(\left[\mathrm{B}_4 \mathrm{O}_5(\mathrm{OH})_4\right]^{2-}\) units. II. Aqueous solution of borax is acidic in nature. III. Cobalt gives blue colour in borax bead test.TS EAMCET 2020 Medium
More PYQs from TS EAMCET
- TS EAMCET 2021 Hard
- Consider the following: I. The electron spin quantum number describes the orientation of the spin of the nucleus with respect to the magnetic field. II. The orbitals represented by the quantum numbers \(\mathrm{n}=3, l=2, \mathrm{~m}=+2\) and \(\mathrm{n}=3, l=2, \mathrm{~m}=-2\) have the same energy III. The energy of a photon is directly proportional to wavelength but inversely proportional to wave number IV. Lyman series of lines appear in ultra-violet region The correct statements areTS EAMCET 2023 Medium
- Two springs of spring constant \(k_1\) and \(k_2\) are connected by a mass \(m\) as shown in the figure. Under negligible friction, if the mass is displaced by small amount \(x\) from its equilibrium position and released, the period of oscillation is
TS EAMCET 2018 Medium - The correct statements from the below 1.Charcoal can be obtained on heating wood in absence of air. 2.Charcoal is impure form of graphite. 3.Diamond is thermodynamically the most stable allotrope of carbon. 4.Coke is used as an oxidising agent during the extraction of iron from its ores.TS EAMCET 2021 Easy
- At a location, the horizontal component of the earth's magnetic field is \(0.3 \mathrm{G}\) in the magnetic meridian and the dip angle is \(60^{\circ}\). The earth's magnetic field at this location in \(G\) isTS EAMCET 2018 Easy
- A magnetic dipole is placed horizontally with the north pole pointing towards north. The horizontal component of earth's magnetic field is If the neutral point is found at a distance of in the plane bisecting the dipole then the magnetic moment of the dipole is
(Assume S.I. units)TS EAMCET 2021 Easy