Quantum Numbers and Selection Rules

In the first energy level there’s only one ______

The numbers in the blue rectangles are for quantum number ______

Selection rules: the rules that allow us to select the set of quantum numbers which indicates a set of solutions that are mechanically possible (numbers in the blue charter). The indication with letters s, p, d, f defines the ______ shape.

The different shapes of spherical ______ at different energy levels can be seen in slide 4.

The p shape has three different orientations (-1, 0, 1), along the different axis (x, y, z). This p ______ are with two lobes where we have the density of probability to find the two orbitals.

We have the final step in which the circular orbit is released, here the electrons aren’t rotating around the nucleus but around lobes shaped like ______, which aren’t spherical.

The F orbitals have _ lobes with overall 7 different orientations.

Hund’s rule of maximum multiplicity states that if several orbitals with the same energy are available, electrons preferentially occupy these orbitals singly with the same _ quantum number before filling them in pairs.

In the case of 3d orbitals, 4s has slightly _ energy.

Aluminum's electronic configuration is 1s^2 2s^2 2p^6 3s^2 3p^1. Aluminum is the _ element on the periodic table.

The completely filling of the lowest energy level is written as Neon, so the electrons are stable and they are not _.

The periodic table has 118 elements, some synthetic that have a really short span life (few milliseconds), while the last natural element is _.

The first block of elements has a filling of ______ orbitals, the first columns plus helium.

The second column is also filling the ______ orbital, and they are fully dependent on two electrons present in the S orbital.

Elements with external electronic configuration from S2 to P1-6, there’s a partial or complete filling of the ______ orbitals in the elements of the last 6 columns.

In the last column we have a list of noble gases characterized by a complete electronic configuration (p6, last column, the one before p5…).

D orbitals are the big middle ______.

We also have F orbitals which are the two series of 14 elements connected to the periodic table with ______.

First group: alkaline metals, except for ______.

The hardest metal is Tungsten and the second hardest is ______, this is why the pure one is used for tanks.