Class 11ChemistryClassification of Elements and Periodicity in PropertiesMix Examples - Classification of Elements and Periodicity in Properties
DifficultDescribe the periodicity of the first ionization enthalpy for elements with atomic numbers $1$ to $60$.
(N/A) Generally,ionization enthalpy refers to the first ionization enthalpy.
The first ionization enthalpies of elements with atomic numbers up to $60$ are plotted in the graph.
The periodicity of the graph is quite striking.
Maxima are observed at the noble gases,which have closed electron shells and very stable electron configurations.
Conversely,minima occur at the alkali metals,and their low ionization enthalpies can be correlated with their high reactivity.
Within a period,as we move from left to right,the ionization enthalpy generally increases.
Within a group,as we move from top to bottom,the ionization enthalpy generally decreases.
The first ionization enthalpies of elements with atomic numbers up to $60$ are plotted in the graph.
The periodicity of the graph is quite striking.
Maxima are observed at the noble gases,which have closed electron shells and very stable electron configurations.
Conversely,minima occur at the alkali metals,and their low ionization enthalpies can be correlated with their high reactivity.
Within a period,as we move from left to right,the ionization enthalpy generally increases.
Within a group,as we move from top to bottom,the ionization enthalpy generally decreases.
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Similar Questions
To which block do the elements with the following outer electronic configurations belong?
$(i)$ $6s^2 4f^3$
$(ii)$ $3s^2 3p^4$
$(iii)$ $3s^1$
$(iv)$ $3d^2 4s^2$
$(i)$ $6s^2 4f^3$
$(ii)$ $3s^2 3p^4$
$(iii)$ $3s^1$
$(iv)$ $3d^2 4s^2$
Easy
View SolutionMatch List-$I$ with List-$II$:
List-$I$ List-$II$ $A$. $Al^{3+} < Mg^{2+} < Na^{+} < F^{-}$ $I$. Ionisation Enthalpy $B$. $B < C < O < N$ $II$. Metallic character $C$. $B < Al < Mg < K$ $III$. Electronegativity $D$. $Si < P < S < Cl$ $IV$. Ionic radii
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
| $A$. $Al^{3+} < Mg^{2+} < Na^{+} < F^{-}$ | $I$. Ionisation Enthalpy |
| $B$. $B < C < O < N$ | $II$. Metallic character |
| $C$. $B < Al < Mg < K$ | $III$. Electronegativity |
| $D$. $Si < P < S < Cl$ | $IV$. Ionic radii |
Choose the correct answer from the options given below:
DifficultJEE MAIN 2025
View SolutionMatch the items in List-$I$ with the items in List-$II$:
List-$I$ List-$II$ $(A)$ Rubidium $(1)$ Germanium $(B)$ Platinum $(2)$ Radioactive chalcogen $(C)$ Eka-silicon $(3)$ $s$-block element $(D)$ Polonium $(4)$ Atomic number $78$
| List-$I$ | List-$II$ |
| $(A)$ Rubidium | $(1)$ Germanium |
| $(B)$ Platinum | $(2)$ Radioactive chalcogen |
| $(C)$ Eka-silicon | $(3)$ $s$-block element |
| $(D)$ Polonium | $(4)$ Atomic number $78$ |
Which of the following is not correctly matched?
Medium
View SolutionArrange the elements $N$,$P$,$O$,and $S$ in the order of:
$(i)$ Increasing first ionisation enthalpy.
$(ii)$ Increasing non-metallic character.
Give reasons for the arrangement assigned.
$(i)$ Increasing first ionisation enthalpy.
$(ii)$ Increasing non-metallic character.
Give reasons for the arrangement assigned.
Medium
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