316721
The \(\mathrm{CN}^{-}\)ion and \(\mathrm{N}_{2}\) are isoelectronic. But in contrast to \(\mathrm{CN}^{-}, \mathrm{N}_{2}\) is chemically inert because of
1 Low bond energy
2 Absence of bond polarity
3 Unsymmetrical electron distribution
4 Presence of more number of electrons in bonding orbitals
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316722
Assertion : Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures or in presence of a catalyst. Reason : In nitrogen molecule, there is extensive delocalization of electrons.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The high dissociation energy of nitrogen, measured at \(946 \mathrm{~kJ} / \mathrm{mol}\), coupled with its small size, accounts for its inert nature or lack of reactivity. There is no delocalisation of electrons in \(\mathrm{N}_{2}\) molecule. So option (3) is correct.
CHXI11:THE P-BLOCK ELEMENTS
316723
On heating a mixture of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{KNO}_{2}\) we get
316721
The \(\mathrm{CN}^{-}\)ion and \(\mathrm{N}_{2}\) are isoelectronic. But in contrast to \(\mathrm{CN}^{-}, \mathrm{N}_{2}\) is chemically inert because of
1 Low bond energy
2 Absence of bond polarity
3 Unsymmetrical electron distribution
4 Presence of more number of electrons in bonding orbitals
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316722
Assertion : Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures or in presence of a catalyst. Reason : In nitrogen molecule, there is extensive delocalization of electrons.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The high dissociation energy of nitrogen, measured at \(946 \mathrm{~kJ} / \mathrm{mol}\), coupled with its small size, accounts for its inert nature or lack of reactivity. There is no delocalisation of electrons in \(\mathrm{N}_{2}\) molecule. So option (3) is correct.
CHXI11:THE P-BLOCK ELEMENTS
316723
On heating a mixture of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{KNO}_{2}\) we get
316721
The \(\mathrm{CN}^{-}\)ion and \(\mathrm{N}_{2}\) are isoelectronic. But in contrast to \(\mathrm{CN}^{-}, \mathrm{N}_{2}\) is chemically inert because of
1 Low bond energy
2 Absence of bond polarity
3 Unsymmetrical electron distribution
4 Presence of more number of electrons in bonding orbitals
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316722
Assertion : Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures or in presence of a catalyst. Reason : In nitrogen molecule, there is extensive delocalization of electrons.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The high dissociation energy of nitrogen, measured at \(946 \mathrm{~kJ} / \mathrm{mol}\), coupled with its small size, accounts for its inert nature or lack of reactivity. There is no delocalisation of electrons in \(\mathrm{N}_{2}\) molecule. So option (3) is correct.
CHXI11:THE P-BLOCK ELEMENTS
316723
On heating a mixture of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{KNO}_{2}\) we get
316721
The \(\mathrm{CN}^{-}\)ion and \(\mathrm{N}_{2}\) are isoelectronic. But in contrast to \(\mathrm{CN}^{-}, \mathrm{N}_{2}\) is chemically inert because of
1 Low bond energy
2 Absence of bond polarity
3 Unsymmetrical electron distribution
4 Presence of more number of electrons in bonding orbitals
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316722
Assertion : Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures or in presence of a catalyst. Reason : In nitrogen molecule, there is extensive delocalization of electrons.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The high dissociation energy of nitrogen, measured at \(946 \mathrm{~kJ} / \mathrm{mol}\), coupled with its small size, accounts for its inert nature or lack of reactivity. There is no delocalisation of electrons in \(\mathrm{N}_{2}\) molecule. So option (3) is correct.
CHXI11:THE P-BLOCK ELEMENTS
316723
On heating a mixture of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{KNO}_{2}\) we get
