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Nitrogen exist diatomic molecule and pho...

Nitrogen exist diatomic molecule and phosphorus as `P_(4).` Why ?

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Due to its small size and high electronegativity, nitrogen atom forms `ppi-ppi` multiple bonds with itself (triple bond), so it exists as a discrete diatomic molecule in elemental form, But phosphorus atom has large size and less electronegativity, so it as forms single bond instead of `ppi-ppi` multiple bond. Therefore, phosphorus exists as `P_(4)` molecule in its elemental form.
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Knowledge Check

  • Main axis of diatomic molecule is Z. the orbitals P_(x) and P_(y) overlap to form

    A
    `Pi` - molecular orbital
    B
    `sigma` - molecualr orbital
    C
    `delta`- molecular orbital
    D
    no nond is formed

  • A diatomic molecule is stable only when :

    A
    1. Number of bonding and antibonding molecular orbitals are equal
    B
    2. Number of electrons in bonding and antibonding molecular orbitals are equal
    C
    3. Number of electrons in bonding molecular orbitals is greater than in antibonding orbitals
    D
    4. The bond order is zero

  • White phosphorus (P_(4)) does not have :

    A
    six `P-P` single bonds
    B
    four `P-P` single bonds
    C
    four lone pairs of electrons
    D
    PPP angle of `60^(@)`.

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