Which of the following statements concerning the quantum numbers are correct?

(i) Angular quantum number determines the three dimensional shape of the orbital.

(ii) The principal quantum number determines the orientation and energy of the orbital.

(iii) Magnetic quantum number determines the size of the orbital.

(iv) Spin quantum number of an electron determines the orientation of the spin of electron relative to the chosen axis.

Answers (1)

The answer is the options (i) and (iv) as only these two statements are correct. In contrast, the principal quantum number determines the orbit's size while the orientation of the electron cloud within a sub-shell is determined by the magnetic quantum number. Hence, statements (ii) and (iii) are incorrect.  

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