Best thing to do: first look around in this related link on "atomic orbitals" and then ask more specific.
The link is in the lower corner of this answer.
I suspect the word you're looking for is "degenerate."
In chemical bonding hybridisation is a mathematial device used in valence bond theory to devise new orbitals from the base atomic orbitals - the aim being to achieve new obitals that "point" in the right direction- so tetrahedral methane - use sp3 hybrid orbitals as these hybrid orbitals point tetrahedrally.
sp hybrid orbitals are literally a hybrid of the S and P orbitals. in P block atoms that have 4 distinct bonds or non bonding pairs of electrons the valence electrons organize into 4 sp hybrid orbitals that point out from the nucleus like the points of a tetrahedron.
sp2 hybrid orbitals overlap.
Because around the quite small P atom (Five 3s2, 3p3 valence electrons in five new "s2p3"-hybrid orbitals in a trigonal bipyramidal shape) there is not enough space to be surrounded by five (5) quite big Iodine atoms (Seven 5s2, 5p5 valence electrons)
hybrid orbital
I suspect the word you're looking for is "degenerate."
In chemical bonding hybridisation is a mathematial device used in valence bond theory to devise new orbitals from the base atomic orbitals - the aim being to achieve new obitals that "point" in the right direction- so tetrahedral methane - use sp3 hybrid orbitals as these hybrid orbitals point tetrahedrally.
sp hybrid orbitals are literally a hybrid of the S and P orbitals. in P block atoms that have 4 distinct bonds or non bonding pairs of electrons the valence electrons organize into 4 sp hybrid orbitals that point out from the nucleus like the points of a tetrahedron.
Pure and hybrid orbitals in acetylene
The type of hybrid orbitals found in graphite and diamond are called 'sp3 hybrid' orbitals. These orbitals are composed of 1 s and 3 p orbitals.
The name of the hybrid orbitals used by sulfur in SCl2 is sp^3. Valence bond theory predicts that SCl2 will have two single bonds and two lone pair of electrons on the central sulfur atom. This is exactly what you will see if you draw the Lewis dot structure.
sp2 hybrid orbitals overlap.
Hybridisation (biology) the process of combining different varieties of organisms to create a hybrid
The Valence Bond Theory uses hybrid electron orbitals because it has been shown that the s and three p orbitals of an electron shell can occur as 4 orbitals with equal energy, thereby producing a single spectrograph line when split through a prism. The s orbital can remain alone, or hybridize with 1, 2, or all 3 p orbitals, refered to as sp, sp2 and sp3 respectively.
Half filled orbitals or empty orbitals
the no of sigma bonds is equal to the no of hybrid orbitals in co-valent compounts. and the no of pi bonds equal to the pure orbitals eg: in ethylene for one carbon atom has 3 sigma bonds means that it has 3 hybrid orbitals (sp2), and it has one pi bond means that it has only one pure p orbital.