How many bonding orbitals are there in $P C l_{3}$ $PCl_3$ ?

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How many bonding orbitals are there in $P C l_{3}$ $PCl_3$ ?

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Answer 1 · 2014-03-19T23:27:31

$P C l_{3}$ $PCl_3$ has three bonding orbitals.

There is a total of 26 valence electrons in this molecule, 5 on $P$ $P$ and 7 on each $C l$ $Cl$ atom. Three of the $s p^{3}$ $sp^3$ hybrid orbitals on $P$ $P$ overlap with one $p$ $p$ orbital on each $C l$ $Cl$ atom to form three bonding orbitals (occupied) and three anti-bonding orbitals (unoccupied).

The fourth $s p^{3}$ $sp^3$ hybrid orbital on $P$ $P$ is a doubly occupied non-bonding orbital, as are the remaining $p$ $p$ orbitals on the three $C l$ $Cl$ atoms.

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How many bonding orbitals are there in $P C l_{3}$ $PCl_3$ ?

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