Class 11ChemistryClassification of Elements and Periodicity in PropertiesMix Examples - Classification of Elements and Periodicity in Properties
EasyWhich of the following orders is incorrect?
- A$NH_3 < PH_3 < AsH_3$ - acidic nature
- B$Li^{+} < Na^{+} < K^{+} < Cs^{+}$ - ionic radius
- C$Al_2O_3 < MgO < Na_2O < K_2O$ - basic nature
- D$Li < Be < B < C$ - $1^{st}$ ionisation potential
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Similar Questions
Nitrogen has positive electron gain enthalpy whereas oxygen has negative. However,oxygen has lower ionisation enthalpy than nitrogen. Explain.
Medium
View SolutionMatch the Column $I$ with Column $II$ and select the correct answer using the given codes.
Column $I$ (Element types) Column $II$ (Electronic configuration) $A$. Inert-gas elements $1. (n-1)d^{1-10} ns^{1-2}$ $B$. Transition elements $2. ns^2 np^6$ $C$. Inner-transition elements $3. (n-2)f^{1-14} (n-1)s^2 p^6 d^{0-1} ns^2$
| Column $I$ (Element types) | Column $II$ (Electronic configuration) |
|---|---|
| $A$. Inert-gas elements | $1. (n-1)d^{1-10} ns^{1-2}$ |
| $B$. Transition elements | $2. ns^2 np^6$ |
| $C$. Inner-transition elements | $3. (n-2)f^{1-14} (n-1)s^2 p^6 d^{0-1} ns^2$ |
Difficult
View SolutionIf the electronic configuration of $A^{-}$ is $[Ar] \ 4s^2 \ 3d^{10} \ 4p^1$,then $A^{+2}$ will belong to which group and period?
Medium
View SolutionPoint out the wrong statement: On moving horizontally from left to right across a period in the periodic table
Easy
View SolutionWhich of the following sets is incorrect?
Medium
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