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CHEMISTRY: ATOMS FIRST VOL 1 W/CON...

14th Edition
Burdge
ISBN: 9781259327933

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CHEMISTRY: ATOMS FIRST VOL 1 W/CON...

14th Edition
Burdge
ISBN: 9781259327933
Interpretation Introduction

Interpretation:

The boundary surface diagrams for the orbitals, 2py, 3dz2 and 3dx2y2 should be drawn using the shape of orbitals.

Concept Introduction:

All p orbitals are dumb-bell shape.  The three p orbitals (pxpy and pz) are identical in size, shape and energy; they differ from one another only in orientation.  An electron described by one of these wave functions will not be found at the nucleus.  There is a nodal plane running through the nucleus between the two lobes.  For example in px orbital, ‘ yz’ is the nodal plane.

There are 5d-orbitals.  All d orbitals (dxydyzdzxdx2y2 and dz2) are identical in energy.  They are labelled with subscripts denoting their orientation with respect to the x, y and z axes and to the planes defined by them.  dxydyz and dzx orbitals have four lobes and these lobes lie symmetrically between the coordinate axes.  For example, the lobes of dxy orbital lie symmetrically in between x and y axes.  dx2y2 orbital also has four lobes along x and y axes.  dz2 orbital has a unique shape with two lobes along z-axis and a ‘belt’ like space centred in the ‘ xy’ plane.  Each d orbital has two nodal planes.

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