Structure of Atom — Chemistry STD 11 Science — Question
Maharashtra BoardEnglish MediumSTD 11 ScienceChemistryStructure of Atom4 Marks
Question
Write a short note on probability density of electron.
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Answer
$i.$ The probability of finding an electron at a given point in an atom is proportional to the square of the wave function at that point $(ψ^2).$
$ii.$ According to Max Born, the square of wave function at a point in an atom is the probability density of the electron at that point.
The following figure shows the probability density diagrams of Is and $2s$ atomic orbitals. These diagrams appear like a cloud.
The electron cloud of $2s$ orbital shows one node, which is a region with nearly zero probability density and displays the change of sign for its corresponding wavefunction.
Diagram:
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