JEE Mains · Chemistry · STD 11 - 3. Classification of elements and periodicity in properties
The correct order of first ionization enthalpy values of the following elements is _______. \((A)\) \(\mathrm{O}\) \((B)\) \(\mathrm{N}\) \((C)\) Be \((D)\) \(\mathrm{F}\) \((E)\) \(B\) Choose the correct answer from the options given below :
- A \(B \)<\( D \)<\( C \)<\( E \)<\( A\)
- B \(E \)<\( C \)<\( A \)<\( B \)<\( D\)
- C \(C \)<\( E \)<\( A \)<\( B \)<\( D\)
- D \(A \)<\( B \)<\( D \)<\( C \)<\( E\)
Answer & Solution
Correct Answer
(B) \(E \)<\( C \)<\( A \)<\( B \)<\( D\)
Step-by-step Solution
Detailed explanation
Correct order of \(\mathrm{I}^{\mathrm{st}} \mathrm{IE}\)
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 List - \(I\) with List - \(II\).
\({List-I }\) \({(Reactants) }\) \({List-II }\) \({ (Products) }\) (\(A\))Phenol, \(\mathrm{Zn} / \Delta\) \((I)\) Salicylaldehyde (\(B\))Phenol, \(\mathrm{CHCl}_3, \mathrm{NaOH}, \mathrm{HCl}\) \((II)\) Salicylic acid (\(C\))Phenol, \(\mathrm{CO}_2, \mathrm{NaOH}, \mathrm{HCl}\) \((III)\) Benzene (\(D\))Phenol, Conc. \(\mathrm{HNO}_3\) \((IV)\) Picric acid JEE Mains 2024 Hard - Given below are two statements: Statements\(-I :\) In Hofmann degradation reaction, the migration of only an alkyl group takes place from carbonyl carbon of the amide to the nitrogen atom. Statement\(-II :\) The group is migrated in Hofmann degradation reaction to electron deficient atom. In the light of the above statement, choose the most appropriate answer from the options given belowJEE Mains 2022 Hard
- A chemist has \(4\) samples of artificial sweetner \(A\). \(\mathrm{B}, \mathrm{C}\) and \(\mathrm{D}\). To identify these samples, he performed certain experiments and noted the following observations : \((i)\) \(A\) and \(D\) both form blue-violet colour with ninhydrin. \((ii)\) Lassaigne extract of \(\mathrm{C}\) give positive \(\mathrm{AgNO}_{3}\) test and negative \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\) test. \((iii)\) Lassaigne extract of \(\mathrm{B}\) and D gives positive sodium nitroprusside test Based on these observations which option is correct ?JEE Mains 2020 Hard
- The maximum possible denticities of a ligand given below towards a common transition and inner -transition metal ion, respectively, are
JEE Mains 2019 Hard - The \(\mathrm{pH}\) of an aqueous solution containing \(1 \mathrm{M}\) benzoic acid \(\left(\mathrm{pK}_{\mathrm{a}}=4.20\right)\) and \(1 \mathrm{M}\) sodium benzoate is \(4.5\). The volume of benzoic acid solution in 300 \(\mathrm{mL}\) of this buffer solution is _______ \(\mathrm{mL}\).JEE Mains 2024 Hard
- Assume that the radius of the first Bohr orbit of hydrogen atom is \(0.6 \mathring A\). The radius of the third Bohr orbit of \(He ^{+}\)is \(..................\) picometer. (Nearest Integer)JEE Mains 2023 Medium
More PYQs from JEE Mains
- The reaction \(2 NO + Br _2 \rightarrow 2 NOBr\) takes places through the mechanism given below : \(NO + Br _2 \Leftrightarrow NOBr _2 \text { (fast) }\) \(NOBr _2+ NO \rightarrow 2 NOBr \text { (slow) }\) The overall order of the reaction is \(.....\).JEE Mains 2023 Medium
- the tangent at the point \(\left(x_{1}, y_{1}\right)\) on the curve \(y=x^{3}+3 x^{2}+5\) passes through the origin, then \(\left(x_{1}, y_{1}\right)\) does NOT lie on the curveJEE Mains 2022 Hard
- An oscillating \(LC\) circuit consists of a \(75\,mH\) inductor and a \(1.2\,\mu F\) capacitor. If the maximum charge to the capacitor is \(2.7\,\mu C\). The maximum current in the circuit will be \(...........\,mA\).JEE Mains 2023 Medium
- In figure, the optical fiber is \(I = 2\,m\) long and has a diameter of \(d = 20\,\mu \,m\). If a ray of light is incident on one end of the fiber at angle \({\theta _1} = {40^o}\) , the number of reflection it makes before emerging from the other end is close to
JEE Mains 2019 Hard - To measure the internal resistance of a battery, potentiometer is used. For \(\mathrm{R}=10 \Omega\), the balance point is observed at \(\ell=500 \mathrm{~cm}\) and for \(\mathrm{R}=1 \Omega\) the balance point is observed at \(\ell=400 \mathrm{~cm}\). The internal resistance of the battery is approximately _______.JEE Mains 2024 Hard
- An electric bulb rated as \(200\, {W}\) at \(100 \,{V}\) is used in a circuit having \(200\, {V}\) supply. The resistance \('R'\) that must be put in series with the bulb so that the bulb delivers the same power is \(.....\,\Omega\)JEE Mains 2021 Medium