Class 11ChemistryClassification of Elements and Periodicity in PropertiesMix Examples - Classification of Elements and Periodicity in Properties
EasyIn what properties do the first elements of a group differ from the subsequent elements of the same group?
(N/A) The first elements of a group (e.g.,$Li, Be, B, C, N, O, F$) exhibit anomalous properties compared to the rest of the elements in their respective groups due to their small size,high electronegativity,and absence of $d$-orbitals.
| $1$. First element of the group | $2$. Subsequent elements of the group |
| They can form a maximum of $4$ bonds (e.g.,$[BF_4]^-$). | They can form more than $4$ covalent bonds (e.g.,$[Al(H_2O)_6]^{3+}$). |
| They form multiple bonds with themselves and other elements (e.g.,$C=C, N=N, C\equiv C, N\equiv N, C=O, C\equiv N, N=O$). | They do not typically form multiple bonds. |
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Similar Questions
Given below are two statements:
Statement $I$: The second ionisation enthalpy of $Na$ is larger than the corresponding ionisation enthalpy of $Mg$.
Statement $II$: The ionic radius of $O^{2-}$ is larger than that of $F^{-}$.
In the light of the above statements, choose the correct answer from the options given below.
Statement $I$: The second ionisation enthalpy of $Na$ is larger than the corresponding ionisation enthalpy of $Mg$.
Statement $II$: The ionic radius of $O^{2-}$ is larger than that of $F^{-}$.
In the light of the above statements, choose the correct answer from the options given below.
DifficultJEE MAIN 2026
View SolutionWhich of the following pairs shows opposite trends when moving from left to right in a period and from top to bottom in a group?
Easy
View SolutionWhich element from the following exhibits a diagonal relationship with $Mg$?
Fill in the blanks given below:
$(i)$ The most widely used scale for measuring electronegativity is ........ .
$(ii)$ The similarity observed in periodic properties is known as .............. .
$(iii)$ The elements located in the middle of the periodic table form .......... type of oxides.
$(i)$ The most widely used scale for measuring electronegativity is ........ .
$(ii)$ The similarity observed in periodic properties is known as .............. .
$(iii)$ The elements located in the middle of the periodic table form .......... type of oxides.
Easy
View SolutionThe incorrect order of properties for the following is:
Difficult
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