According to VBT any covalent bond will be formed by overlapping of atomic orbitals of bonded atoms provided atomic orbitals must be half-filled and electrons be in opposite spin. According to type of overlapping covalent bonds can be classified as (a) sigma-bond (b) pi-bond (c ) delta-bond : The combination of orbital that can not produce non-bonding molecular orbital is (internuclear axis is z-axis ) :

According to VBT any covalent bond will be formed by overlapping of at

1.	According to VBT any covalent bond will be formed by overlapping of atomic orbitals of bonded atoms provided atomic orbitals must be half-filled and electrons be in opposite spin. According to type of overlapping covalent bonds can be classified as (a) sigma-bond (b) pi-bond (c ) delta-bond : The combination of orbital that can not produce non-bonding molecular orbital is (internuclear axis is z-axis ) :
Answer» `p_(y)+d_(x^(2)-y^(2))` `p_(z)+d_(yz)` `s+d_(XZ)` `d_(xy)+d_(xy)` Solution :`(a) implies p_(y)+d_(x^(2)-y^(2))` : can produce non-bonding if inter-nuclear axis is either x,y or z-axis `(b) implies p_(z)+d_(yz)` : can produce non-bonding if inter-nuclear axis is either x,y or z-axis (c )` implies s+d_(xz)` : will always form non-bonding inrrepective of inter-nuclear axis (d) `implies d_(xy)+d_(xy)` : either form `pi` bond if inter-nuclear axis is `x//y` axis or can ALSO form `delta`-bond if inter nuclear axis is z-axis.