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s-orbital is spherically symmetricla hence
- a it is directional independent
- b angular independent
- c both (a) and (b)
- d None of the above

s-orbital is spherically symmetrical and so it is non-directional i.e. it is independent of direction. It is also angular independent because for s-orbital l=0 which gives m=0. So, the angular wavefunction is constant and so wavefunction of s-orbital depend only on r, i.e. they are radial dependent.

Hence. correct answer is (c)

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