Class 11ChemistryClassification of Elements and Periodicity in PropertiesMix Examples - Classification of Elements and Periodicity in Properties
EasyTo which group and period does the element belong if the electronic configuration of an element in its $-2$ oxidation state is $1s^2 2s^2 2p^6 3s^2 3p^6$?
- Aperiod $3$,group $16$
- Bperiod $3$,group $17$
- Cperiod $4$,group $16$
- Dperiod $4$,group $17$
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Select the correct order for the elements $B, C, N, O$:
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View SolutionMaximum enthalpy change is associated with which of the following reactions?
Outermost electronic configuration of a group $13$ element,$E$,is $4s^2 4p^1$. The electronic configuration of an element of $p$-block,period $5$,placed diagonally to element $E$ is:
Nitrogen has positive electron gain enthalpy whereas oxygen has negative. However,oxygen has lower ionisation enthalpy than nitrogen. Explain.
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View SolutionMatch the properties of elements given in List-$I$ with List-$II$.
List-$I$ List-$II$ $(1)$ Active non-metal with high electron gain enthalpy. $(A)$ $Na$ $(2)$ Soft metal with low ionization enthalpy. $(B)$ $Sb$ $(3)$ Metalloid that forms ${M_2}{O_3}$ type oxide. $(C)$ $He$ $(4)$ Chemically inert gas. $(D)$ $Cl$
| List-$I$ | List-$II$ |
| $(1)$ Active non-metal with high electron gain enthalpy. | $(A)$ $Na$ |
| $(2)$ Soft metal with low ionization enthalpy. | $(B)$ $Sb$ |
| $(3)$ Metalloid that forms ${M_2}{O_3}$ type oxide. | $(C)$ $He$ |
| $(4)$ Chemically inert gas. | $(D)$ $Cl$ |
Medium
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