Atomic Orbitals, Electron Configuations And The Periodic Table Flashcards
What is the maximum number of electrons that an orbital can hold?
2
What is the quantum number, n, and how bag does it describe?
n is the principal quantum number and indicates the main energy level for an electron and is related to the size of the orbital.
What is the quantum number, l, and what does it describe?
The angular momentum quantum number and it determines the shape of the sub shell.
What is the quantum number, ml, and what does it describe?
The magnetic quantum number and it determines the orientation of the orbital.
What is the quantum number, ms, and what does it describe?
The spin magnetic quantum number and it determines the direction of spin.
What is the aufbau principle?
Electrons fill orbitals in order of increasing energy.
What is Hund’s rule?
When degenerate orbitals are available, electrons fill each singly, keeping their spins parallel before spin pairing starts.
What is the Pauli exclusion principle?
No two electrons in one atom can have the same set of four quantum numbers, therefore, no orbital can hold more than two electrons and these 2 electrons must have opposite spins.
Which groups of the periodic table are in the s-block?
Group 1 & 2
(The left side groups)
Which groups in the periodic table are in the p-block?
The right side groups
Which groups of the periodic table are in the d-block?
The middle groups
(Transitional Metals)
Which elements in the periodic table are in the f-block?
The elements at the very bottom of the periodic table.
When is there a special stability in electron subshells?
There is a special stability associated with half-filled and full sub-shells.
How many electron pairs are there in a linear arrangement?
2 electron pairs
How many electron pairs are there in a trigonal planar arrangement?
3 electron pairs
How many electron pairs are there in a tetrahedral arrangement?
4 electron pairs
How many electron pairs are there in a trigonal bipyramidal arrangement?
5 electron pairs
How many electron pairs are there in a octahedral arrangement?
6 electron pairs
State the combinations of non-bonding/bonding electron pairs in order of decreasing strength?
• Non-bonding/non-bonding
• Non-bonding/ bonding pair
• Bonding/Bonding pair
