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प्रश्न
Write a short note on anomalous properties of the first element of the p-block.
उत्तर
In p-block elements, the first member of each group differs from the other elements of the corresponding group.
The following factors are responsible for this anomalous behaviour.
- Small size of the first member.
- High ionisation enthalpy and high electronegativity.
- Absence of d-orbitals in their valance shell.
The first member of group-13, boron is a metalloid while others are reactive metals. Moreover, boron shows a diagonal relationship with silicon of group -14. The oxides of boron and silicon are similar in their acidic nature.
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संबंधित प्रश्न
Oxidation state of carbon in its hydrides
The stability of the +1 oxidation state increases in the sequence
Describe briefly allotropism in p-block elements with specific reference to carbon.
Give one example for the following.
Prictogen
Give one example for the following.
Chalcogen
Write a note on the metallic nature of p-block elements.
