Class 11ChemistryClassification of Elements and Periodicity in PropertiesMix Examples - Classification of Elements and Periodicity in Properties
EasyWhich one of the following sets of ions represents the collection of isoelectronic species?
- A$K^{+}, Cl^{-}, Mg^{2+}, Sc^{3+}$
- B$Na^{+}, Ca^{2+}, Sc^{3+}, F^{-}$
- C$K^{+}, Ca^{2+}, Sc^{3+}, Cl^{-}$
- D$Na^{+}, Mg^{2+}, Al^{3+}, Cl^{-}$
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Similar Questions
Which of the following statements is not correct regarding the classification of elements in the periodic table?
Easy
View SolutionConsider the following elements $In$,$Tl$,$Al$,$Pb$,$Sn$ and $Ge$. The most stable oxidation states of elements with highest and lowest first ionisation enthalpies,respectively,are
DifficultJEE MAIN 2025
View SolutionState whether the following statements are true or false:
$(i)$ As the atomic number increases in a period,the nuclear charge increases,therefore the ionization enthalpy increases.
$(ii)$ As the metallic character of elements increases,the atomic radius generally increases.
$(iii)$ $Mn$ $(Z = 25)$ is a transition element. Although it is a $3d$-orbital element,its position in the periodic table is in the $4^{th}$ period.
$(i)$ As the atomic number increases in a period,the nuclear charge increases,therefore the ionization enthalpy increases.
$(ii)$ As the metallic character of elements increases,the atomic radius generally increases.
$(iii)$ $Mn$ $(Z = 25)$ is a transition element. Although it is a $3d$-orbital element,its position in the periodic table is in the $4^{th}$ period.
Medium
View SolutionMatch the following and select the correct option:
List-$I$ List-$II$ $(A)$ Ionization enthalpy $(i)$ $P < Si < Mg < Na$ $(B)$ Metallic character $(ii)$ $I < N < O < F$ $(C)$ Electron gain enthalpy $(iii)$ $B < Be < C < O < N$ $(D)$ Electronegativity $(iv)$ $I < Br < F < Cl$
| List-$I$ | List-$II$ |
|---|---|
| $(A)$ Ionization enthalpy | $(i)$ $P < Si < Mg < Na$ |
| $(B)$ Metallic character | $(ii)$ $I < N < O < F$ |
| $(C)$ Electron gain enthalpy | $(iii)$ $B < Be < C < O < N$ |
| $(D)$ Electronegativity | $(iv)$ $I < Br < F < Cl$ |
Identify the incorrect set$(s)$ among the following periodic trends:
Difficult
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