Trends in electron configurations
Every element in group 2 has this final electron sub-level.
s ~or~ s2
1s2 2s2 2p6 3p6 4s1
potassium (K)
State of an electron being in a higher energy level than intended.
What is the excited state?
An electron sub-level that contains 2 electrons.
What is the s sub-level?
[He] 1s1
What is the electron configuration of Lithium?
The name of the elements that have completed octets.
Noble Gases
1s2 2s2 2p6 3p6 4s2 3d10 4p3
arsenic (As)
State of electrons being present only in the lowest unoccupied energy level.
What is the ground state?
Something prevented by the Aufbau Principle.
What are electrons being added to higher energy levels, before lower energy levels are filled.
[Ne] 3s2 3p4
What is the electron configuration of Sulfur?
This increases as you near completing a period, or at the beginning of the period, but decreases in the middle.
What is reactivity?
1s2 2s2 2p6 3p6 4s2 3d4
chromium (Cr)
The process where an electron takes in a quantum of energy, causing them to jump to a higher energy level.
What is absorption?
The rule that dictates that electrons fill unoccupied electron orbitals first.
What is Hund's Rule?
The noble gas configuration for yttrium (Y) atomic number 39.
[Kr] 5s2 4d1
Electron configurations in this section of the periodic table have their primary energy level reduced by 1.
The d block.
1s2 2s2 2p6 3p6 4s2 3d10 4p6 5s2 4d9
silver Ag
The process by which electrons fall to a lower energy level, and produce light.
What is emission?
The rule that dictates that electrons must have opposite spins in each orbital (one up and one down).
What is the Pauli Exclusion Principle?
The noble gas configuration of iodine (I) atomic number 53.
[Kr] 5s2 4d10 5p5
This makes helium (He) unique in terms of its electron configuration and periodic table placement.
1s2 2s2 2p6 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f6
samarium (Sm)
The characteristic of light that changes depending on the distance between energy levels that is traveled by electrons.
What is the wavelength of light (color)?
The number of electrons held in a completed 4th energy level.
What is 32 electrons?
[Rn] 7s2 5f14 6d2
What is the electron configuration of rutherfordium (Rf)?