Competishun Header
Competishun
Contact Us
Back

Report Issue

JEE MAIN 2023
10-04-2023 S2
Question

The electron in the $\mathrm{n}^{\text {th }}$ orbit of $\mathrm{Li}^{2+}$ is excited to ( $\mathrm{n}+1$ ) orbit using the radiation of energy $1.47 \times 10^{-17} \mathrm{~J}$ (as shown in the diagram). The value of $n$ is $\_\_\_\_$ . Given $R_H=2.18 \times 10^{-18} \mathrm{~J}$
Write Your Answer
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Solution Image
Question Tags
JEE Main
Chemistry
Medium
Start Preparing for JEE with Competishun
YouTube
Books
App
Tests
Filters 0
JEE Main
JEE Advance
Easy
Medium
Hard
Showing 18 questions
Q JEE ADVANCE 20102010
Aqueous solutions of $\mathrm{HNO}_3, \mathrm{KOH}, \mathrm{CH}_3 \mathrm{COOH}$, and $\mathrm{CH}_3 \mathrm{COONa}$ of identical concentrations are provided. The pair (s) of solutions...
JEE AdvanceChemistryEasy
View Solution→
QJEE Advance 20132013
Match List I with List II and select the correct answer using the code given below the lists :
JEE AdvanceMathematicsEasy
View Solution→
QJEE Advance 20122012
Let $f(x)=(1-x)^2 \sin ^2 x+x^2$ for all $x \in$ IR and let $g(x)=\int_1^x\left(\frac{2(t-1)}{t+1}-\ell\right.$ nt $) f(t) d t$ for all...
JEE AdvanceMathematicsEasy
View Solution→
QJEE Advance 20132013
A line $L: y=m x+3$ meets $y$ - axis at $E(0,3)$ and the arc of the parabola $...
JEE AdvanceMathematicsEasy
View Solution→
QJEE ADVANCE 20102010
The ionization isomer of $\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_4 \mathrm{Cl}\left(\mathrm{NO}_2\right)\right] \mathrm{Cl}$ is
JEE AdvanceChemistryEasy
View Solution→
QJEE ADVANCE 20102010
In the Newman projection for 2,2-dimethylbutane
JEE AdvanceChemistryEasy
View Solution→
QJEE Advance 20122012
Let $f(x)=(1-x)^2 \sin ^2 x+x^2$ for all $x \in$ IR and let $g(x)=\int_1^x\left(\frac{2(t-1)}{t+1}-\ell\right.$ nt $) f(t) d t$ for all...
JEE AdvanceMathematicsEasy
View Solution→
QJEE Advance 20102010
The compounds P, Q and S
JEE AdvanceChemistryEasy
View Solution→
QJEE Advance 20122012
Let $\alpha(a)$ and $\beta(a)$ be the roots of the equation $(\sqrt[3]{1+a}-1) x^2+(\sqrt{1+a}-1) x+(\sqrt[6]{1+a}-1)=0$ where $a>-1$. Then $...
JEE AdvanceMathematicsEasy
View Solution→
QJEE ADVANCE 20102010
The correct structure of ethylenediaminetetraacetic acid (EDTA) is
JEE AdvanceChemistryEasy
View Solution→
QJEE ADVANCE 20102010
The bond energy (in $\mathbf{k c a l ~ m o l}^{-\mathbf{1}}$ ) of a $\mathrm{C}-\mathrm{C}$ single bond is approximately
JEE AdvanceChemistryEasy
View Solution→
QJEE ADVANCE 20102010
The species which by definition has ZERO standard molar enthalpy of formation at 298 K is
JEE AdvanceChemistryEasy
View Solution→
QJEE Advance 20122012
Let $a_1, a_2, a_3, \ldots$. be in harmonic progression with $a_1=5$ and $a_{20}=25$. The least positive integer $n$ for which...
JEE AdvanceMathematicsEasy
View Solution→
QJEE ADVANCE 20102010
Plots showing the variation of the rate constant ( $k$ ) with temperature ( $T$ ) are given below. The...
JEE AdvanceChemistryEasy
View Solution→
QJEE Advance 20132013
Of the three independent events $\mathrm{E}_1, \mathrm{E}_2$ and $\mathrm{E}_3$, the probability that only $\mathrm{E}_1$ occurs is $\alpha$, only $\mathrm{E}_2$ occurs...
JEE AdvanceMathematicsEasy
View Solution→
QJEE Advance 20132013
A box $B_1$ contains 1 white ball, 3 red balls and 2 black balls. Another box $B_2$ contains 2 white...
JEE AdvanceMathematicsEasy
View Solution→
QJEE Advance 20132013
Consider the set of eight vectors $V=\{a \hat{i}+b \hat{j}+c \hat{k}: a, b, c \in\{-1,1\}\}$. Three non-coplanar vectors can be chosen...
JEE AdvanceMathematicsEasy
View Solution→
QJEE Advance 20122012
If P is a $3 \times 3$ matrix such that $\mathrm{P}^{\top}=2 \mathrm{P}+\mathrm{I}$, where $\mathrm{P}^{\top}$ is the transpose of P and...
JEE AdvanceMathematicsEasy
View Solution→