A) both assertion and reason are correct and reason is the correct explanation of assertion
B) both assertion and reason are correct and reason is the not correct explanation of assertion
C) assertion is true but reason is false
D) both assertion and reason are false
Correct Answer: C
Solution :
: Spin angular momentum of the electron, a vector quantity, can have two orientations (represented by\[+\]and\[-\]sign) relative to a chosen axis. These two orientation are distinguished by the spin quantum number\[{{m}_{s}}\] equals to\[+1/2\]or\[-1/2\]. These are called the two spin states of the electron and are normally represented by the two arrows\[\uparrow \] (spin up) and\[\downarrow \](spin down) respectively.
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