Answer :
(a) n = 4, l = 2
At l = 2, [tex]m_l=+2,+1,0,-1,-2[/tex]
Number of orbitals = 5
(b) n = 5, l = 1
At l = 1, [tex]m_l=+1,0,-1[/tex]
Number of orbitals = 3
(c) n = 6, l = 3
At l = 3, [tex]m_l=+3,+2,+1,0,-1,-2,-3[/tex]
Number of orbitals = 7
Explanation:
There are 4 quantum numbers :
Principle Quantum Numbers : It describes the size of the orbital. It is represented by n. n = 1,2,3,4....
Azimuthal Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...
Magnetic Quantum Number : It describes the orientation of the orbitals. It is represented as m_l. The value of this quantum number ranges from [tex](-l\text{ to }+l)[/tex]. When l = 2, the value of [tex]m_l[/tex] will be -2, -1, 0, +1, +2.
Spin Quantum number : It describes the direction of electron spin. This is represented as [tex]m_s[/tex]The value of this is [tex]+\frac{1}{2}[/tex] for upward spin and [tex]-\frac{1}{2}[/tex] for downward spin.
(a) n = 4, l = 2
At l = 2, [tex]m_l=+2,+1,0,-1,-2[/tex]
Number of orbitals = 5
(b) n = 5, l = 1
At l = 1, [tex]m_l=+1,0,-1[/tex]
Number of orbitals = 3
(c) n = 6, l = 3
At l = 3, [tex]m_l=+3,+2,+1,0,-1,-2,-3[/tex]
Number of orbitals = 7