+ and - sign of the lobes of $p_{y}$ orbital represents

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+ve represents maximum probability of finding electron and -ve represents minimum probability of finding electrons.

+ve and -ve signs are geometric sign of wave functions

+ve and -ve sign are +ve and -ve charge

All of the above

answer is A.

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Detailed Solution

According to schrodinger wave equation, an electron in an atom can be described by a differential equation, whose particular solutions are the atomic orbitals .
These orbitals are represented by psi(greek), whose solution in the polar co-ordinates generate the shape of the orbital .
For p orbital, the shape is dumbell with one lobe - & one +.
These are the signs of $ψ$ function & don't have any physical significance.

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