EL.3 Flashcards
Shells, sub-shells, and orbitals
How are electron shells labeled?
They are labeled with a principal quantum number, n. Where for example, n=1 represents the first shell and so on.
What is the relationship between the value of n and the energy associated with that shell?
The higher the value of n, the further the shell is from the nucleus and therefore the higher the associated with that energy level.
What are the four sub shells?
s, p, d and f.
How are electrons held in sub shell in n=1?
Two electrons in the s sub shell.
How are electrons held in sub shells in n=2?
Two electrons in the s sub shell and six electrons in the p sub shell.
How are electrons held in sub shells in n=3?
Two electrons in the s sub shell, six electrons in the p sub shell, and 10 electrons in the d sub shell.
How are electrons held in sub shells in n=4?
Two electrons in the s sub shell, six electrons in the p sub shell, 10 electrons in the d sub shell, and 14 electrons in the f sub shell.
What is an atomic orbital of an electron?
A particular 3D region of space around the nucleus where the electron is likely to be found.
How many s orbitals does the s sub shell contain?
1
How many p orbitals does the p sub shell contain?
3
How many d orbitals does the d sub shell contain?
5
How many f orbitals does the f sub shell contain?
7
What is the maximum number of electrons each atomic orbital can hold?
2
What motion does the two electrons in an atomic orbital show?
They spin in opposite directions at the same rate.
What is the electronic configuration of an atom?
The way the electrons are arranged in shells and orbitals to produce the lowest energy arrangement possible.
