Electronic Structure Flashcards
What is an Orbital?
An Orbital is a Reigon of Space within an Atom, that can hold up to 2 Electrons with Opposite Spins
What different types of Orbitals are there?
The different Orbitals are S, P, D & F
What is an Electron Shell?
An Electron Shell is a Group of Orbitals with the same Principal Quantum Number (Relative Overall Energy)
What is an Electron Shell also known as?
An Electron Shell can also be called a Main Energy Level
Define Sub-Shell
A Sub-Shell is a group of the Same type of Atomic Orbitals Within a Shell
What is the Principal Quantum Number of an Orbital?
The Principal Quantum Number of an Orbital represents its relative Energy
As you get Further Away from the Nucleus, Principle Quantum Numbers….
As you get Further Away from the Nucleus, Principle Quantum Numbers Increase
Define the term First Ionisation Energy
The First Ionisation Energy is the energy required to Remove 1 Mole of Electrons from 1 Mole of Gaseous Atoms of an Element, turning them into 1+ Ions
As Atomic Radius Increases, First Ionisation Energy…
As Atomic Radius Increases, First Ionisation Energy Decreases as Outer Electrons are Further from the Nucleus, hence experience Less Attraction
As Nuclear Charge Increases, First Ionisation Energy…
As Nuclear Charge Increases, First Ionisation Energy Decreases as Outer Electrons experience Greater Attraction
What is The Formula for the Number of Electrons in a Shell?
The Number of Electrons in a Shell is given by: 2n2
What is the Shape of an S Orbital?
An S Orbital is Spherical
What is the Shape of a P Orbital?
A P Orbital is Dumb-Bell Shaped
Which Sub-Shell Is Filled First… The 3d or 4s?
The 4s Orbital is filled before the 3d Sub-Shell as it is of Lower Energy
Which Sub-Shell Is Emptied First… The 3d or 4s?
The 4s Orbital is Emptied Before the 3d Sub-Shell
