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n=2 has 3 2p orbitals.
http://en.wikipedia.org/wiki/Quantum_number
The "formula" is n2 - so for principal quantum number 4 there are 16 orbitals, correspnding to one X s orital, three X p orbitals, five X d orbitals, seven X f orbitals.
All p sublevels contain three orbitals, including the 4p sublevel.
All four quantum numbers i.e principle ,azimuthal or subsidiary, magnetic and spin quantum numbers are required to specify a single atomic orbital.
Hybridization comes from very complicated Quantum Mechanics and says that as many molecular orbitals that are being combound, the exact same number of hybrid orbitals are formed. Essentially, spherical s-orbitals and somewhat ellipcitcal p-orbitals are fused to make new orbitals that are identical. Example: 4 equivalent (tetragonal) sp3-orbitals in CH4 molecules.
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10 electrons.The angular momentum quantum number is l (small L). This quantum number is dependant on the principal quantum number, and has values, 0 1,2 ..(n-1), where each value of n refers to a subshell known to chemists as followsn= 0, s orbital; n=1, p orbital; n= 2, d orbital; n= 3, f orbital.So we are looking at the d orbitals.There are five d orbitals, with magnetic quantum numbers running from -l to +l, that is -2, -1, 0, +1, +2Each of these can hold 2 electrons (with spin quantum numbers -1/2, +1/2)So we have 10 electrons that can have pricipal quantum numbers of 4 and angular monmentum quantum number of 2.
magnetic quantum number tells about the orientation of atomic orbitals which is actually obtained as a resolution due to the application of magnetic or electric field (stark effect).It is very significant and it has many applications
Ti: 1s22s22p63s23p64s25d2 . It has a total of 22 electrons occupying these orbitals of these quantum numbers.
the quantum number n determines the energy of an electron in a hyrdogen atom.
If the question is an attempt to ask "How many orbitals are there with principal quantum number n = 2", then 4 orbitals which can hold a total of 8 electrons.