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PART - 1 CH - 2 Structure of Atom — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryPART - 1 CH - 2 Structure of Atom2 Marks
Question
Explain magnetic quantum number.
✓

Answer

Magnetic quantum number $\left(m_1\right)$ :
(i) It describes about orbital.
(ii) It gives information about 3D configuration of orbitals.
(iii) Number of orbitals in subshell $=2 l+1=$ possible values of $m_l$.
(iv) $m_l=-l,-(l-1),-(l-2), \ldots \ldots \ldots 0$,$\ldots \ldots \ldots (l-2),(l-1), l$
(v) $l=0(s) m_l=0$, one $s$-orbital
$\begin{aligned} l & =1(p) m_l=-1,0,+1, \text { three } p \text {-orbital } \\
l & =2(d) m_l=-2,-1,0,+1,+2, \text { five } d \text {-orbital } \\
l & =3(f) m_l=-3,-2,-1,0,+1,+2,+3, \text { seven }\end{aligned}$

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