CHM 101 : Electronic Configuration

What is electronic configuration ?

Electronic configuration is the distribution of of electrons in the atomic orbital of molecules or atom

What is an orbital?

An orbital is a region around nucleus where an electron is most likely to be found

What is the maximum number of electron an orbital can hold

2 electron

What are subshells

They are division within shells labeled s,p,d,f which contain orbital

What is Aufbau principle

It states that electron are filled into the orbital from the lowest energy level before filling the higher energy level

What is Pauli’s Exclusion principle

It's states that two electron in the same orbital of an atom cannot have the same values for all four quantum numbers

What is hunds principle

It states that electron occupy degenerate orbital ( orbital of the same energy) singly before pairing occurs

What are quantum numbers

They describe the position and behaviour of an electron in an atom

What is principle quantum numbers?

It indicates the main energy level (n)

What is Azimuthal quantum numbers?

It defines the shape of the orbital. They include s,p,d,f

What is magnetic quantum numbers

It specify the orientation of the orbital (m,l)

What is spin quantum numbers

It indicates the spin direction of an electron (Ms) e.g +1 or 1

What are degenerate orbital

They are orbital that have the same energy level

Why is electronic configuration important

It explains chemical bonding, reactivity, periodic trends and physical behavior of elements

What is chemical reactivity

It determines how atoms react and bond elements with similar configuration ( same group in periodic table) exhibit similar chemical behavior

What is periodic properties

This explains the trend in atomic size, ionization energy, electron affinity and electron negativity

Define molecular geometry

It influences the shape of molecules and polarity based on valence electron arrangement

What is magnetic properties

It determines if a substance is paramagnetic (unpaired electron) or diamagnetic ( paired electron)

Explain the term spectral properties

Electronic transition between energy levels produce absorption or emission spectral