31s is there ne diff ans.
What orbital has only positive values of wave function at all distances from the nucleus?
1s
2s
2p
3d
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UP 0 DOWN 0 0 3
3 Answers
1all other orbital 1s have a radial node .
their probability verusus distance graph touches x-axis at some point at these points their (wavefunction v/s distance graph ) changes it's sign .
thus 1s remains positive .
otherwise we can remember graphs of few functions