Quantum Mechanical Model Of Atom
Chapter Name : Structure Of Atom |
Sub Topic Code : 102_11_02_06_03 |
Topic Name : Quantum Mechanical Model Of Atom |
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Sub Topic Name : Shapes Of Atomic Orbitals |
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Introduction
• It is the azimuthal quantum number (l) which determines the shape of an orbital. • Orbitals vary in shape due to variations in probability density. • s- Orbitals are spherically shaped; p-orbitals are dumb bell shaped while d- orbitals are in the shape of a clover leaf. • Radial node is a circular region where the probability density function = 0 whereas angular node is a planar region where density = 0.
Pre-Requisites:
• Atomic orbitals • Quantum Numbers
Real Life Question:
Why is an atom round in shape?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
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| Atomic Orbitals | The wave function of an electron in an atom or molecule, indicating the electron's probable location. |
| Azimuthal quantum number | It is a quantum number associated with the angular momentum of an atomic electron which determines the shape of an atomic orbital. |
| Nodal surface | It is a region where the probability density function reduces to zero. |
| Radial node | A circular region where the probability density function = 0 |
| Angular node | A planar region where probability density function = 0. |
Learning aids / Gadgets
| Gadgets | How it can be used |
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Practical examples around us
| Examples | Explainations |
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What you learn in Theory:
The variation in shapes of atomic orbitals.