Class 11ChemistryClassification of Elements and Periodicity in PropertiesMix Examples - Classification of Elements and Periodicity in Properties
MediumIn which of the following arrangements,the sequence does not strictly follow the property indicated against it?
- A$Al^{3+} < Mg^{2+} < Na^{+} < F^{-}$ : Increasing ionic size
- B$B < C < N < O$ : Increasing first ionization enthalpy
- C$I < Br < F < Cl$ : Increasing electron gain enthalpy (without negative sign)
- D$Li < Na < K < Rb$ : Increasing metallic radius
Explore More
Similar Questions
Given below are two statements:
Statement-$I$: The correct order in terms of atomic/ionic radii is $Al > Mg > Mg^{2+} > Al^{3+}$.
Statement-$II$: The correct order in terms of the magnitude of electron gain enthalpy is $Cl > Br > S > O$.
In the light of the above statements, choose the correct answer from the options given below:
Statement-$I$: The correct order in terms of atomic/ionic radii is $Al > Mg > Mg^{2+} > Al^{3+}$.
Statement-$II$: The correct order in terms of the magnitude of electron gain enthalpy is $Cl > Br > S > O$.
In the light of the above statements, choose the correct answer from the options given below:
DifficultJEE MAIN 2026
View SolutionHow many of the following statements are correct?
$(a)$ 'He' is the second most abundant element in the universe.
$(b)$ The symbol for the element with atomic number $110$ is Ds.
$(c)$ Osmium has the highest density among all elements.
$(d)$ Francium is the most electropositive element in the periodic table.
$(a)$ 'He' is the second most abundant element in the universe.
$(b)$ The symbol for the element with atomic number $110$ is Ds.
$(c)$ Osmium has the highest density among all elements.
$(d)$ Francium is the most electropositive element in the periodic table.
Compare the ionization enthalpy and electron gain enthalpy values of the elements given below:
Element Description Element $\Delta_{i}H_1$ $\Delta_{i}H_2$ $\Delta_{eg}H$ $(i)$ Most reactive non-metal $(A)$ $419$ $3051$ $-48$ $(ii)$ Most reactive metal $(B)$ $1681$ $3374$ $-328$ $(iii)$ Least reactive element $(C)$ $738$ $1451$ $-40$ $(iv)$ Metal forming dihalide $(D)$ $2372$ $5251$ $+48$
| Element Description | Element | $\Delta_{i}H_1$ | $\Delta_{i}H_2$ | $\Delta_{eg}H$ |
| $(i)$ Most reactive non-metal | $(A)$ | $419$ | $3051$ | $-48$ |
| $(ii)$ Most reactive metal | $(B)$ | $1681$ | $3374$ | $-328$ |
| $(iii)$ Least reactive element | $(C)$ | $738$ | $1451$ | $-40$ |
| $(iv)$ Metal forming dihalide | $(D)$ | $2372$ | $5251$ | $+48$ |
Medium
View SolutionIn which of the following arrangements is the order $NOT$ according to the property indicated against it?
Medium
View SolutionWhich of the following statements is incorrect?
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo