**CH4 (Quantum Theory) Flashcards
Quantum numbers are used to differentiate between _______.
electrons
In quantum theory, each electron in an atom is assigned a set of ____ quantum numbers.
four
Three of four quantum numbers that are assigned for each electron in an atom, give the ________ of the electron.
location
the fourth of four quantum numbers assigned to each electron in an atom gives the _________ of the electron within the orbital.
orientation
What are the four quantum numbers?
n, l, ml, and ms.
n (1,2,3,4) is the _______ quantum number.
principal
______ (n-1) is the angular momentum quantum number.
l
when n=1, l will be? and when n=2, l will be?
0, 0 or 1
Name the orbital: when l=0, l=1, l=2, l=3?
0 is the s orbital, 1 is the p orbital, 2 is the d orbital, 3 is f orbital
In other words, l is the _____ of the “volume” of the space that the electron occupies.
shape
ml is the ______ quantum number
magnetic
_____ is the orientation of the orbital in space.
ml
T or F: the number of orbitals depends on ml.
true, so when l=2 then, ml=-2 -1 0 1 2 and so the number of oribtals are 5
ms is the _____ quantum number.
spin
ms = ________ when the direction of the spin is from N–>S or ______ when it is from S–>N
+1/2, -1/2
T or F: Existence (and energy) of electron in atoms is described by its unique wave function
true
_________ states that no two electrons in an atom can have the same four quantum numbers.
pauli exclusion principle
________ is where electrons have the same value of n.
shell
_______ is where electrons have the same vlaues of n and l.
subshell
_______ is where electrons have the same values of n, l, and ml.
orbital
T or F: An orbital can hold 4 electrons.
false, 2 electrons
how many 2p orbitals are there in an atom?
3 orbitals
______ electrons can be placed in the 3d subshell.
10
T or F: Energy of orbitals in a single electron atom only depends on principal quantum number n.
true
