Class 11ChemistryClassification of Elements and Periodicity in PropertiesMix Examples - Classification of Elements and Periodicity in Properties
MediumWhat are the differences between the first element of a group and the subsequent elements in the same group?
(N/A) The first element of a group differs from the subsequent elements due to its small size,high electronegativity,and the absence of $d$-orbitals in its valence shell. The differences are summarized below:
| First element of the group | Other elements of the group |
|---|---|
| Forms covalent compounds. | Forms ionic compounds. |
| Small atomic/ionic size. | Larger atomic/ionic size. |
| High charge/radius ratio. | Low charge/radius ratio. |
| High electronegativity. | Low electronegativity. |
| Only $4$ orbitals available in the valence shell ($s$ and $p$). | $9$ orbitals available in the valence shell ($s, p,$ and $d$). |
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Similar Questions
Choose the incorrect order.
Difficult
View SolutionGiven below are two statements:
Statement-$I$: $C < O < N < F$ is the correct order in terms of first ionization enthalpy values.
Statement-$II$: $S > Se > Te > Po > O$ is the correct order in terms of the magnitude of electron gain enthalpy values.
In the light of the above statements, choose the correct answer from the options given below:
Statement-$I$: $C < O < N < F$ is the correct order in terms of first ionization enthalpy values.
Statement-$II$: $S > Se > Te > Po > O$ is the correct order in terms of the magnitude of electron gain enthalpy values.
In the light of the above statements, choose the correct answer from the options given below:
DifficultJEE MAIN 2026
View SolutionTwo statements are given below.
Statement $I$: Nitrogen has more ionization enthalpy and electronegativity than beryllium.
Statement $II$: $CrO_3$ and $B_2O_3$ are acidic oxides.
Correct answer is
Statement $I$: Nitrogen has more ionization enthalpy and electronegativity than beryllium.
Statement $II$: $CrO_3$ and $B_2O_3$ are acidic oxides.
Correct answer is
Which of the following orders is not correct about the property shown against it?
Maximum enthalpy change is associated with which of the following reactions?
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