Chapter 7 Electronic Structure of Atoms Flashcards
protons and nuetrons are found in the
nucleus
electrons are the ______ of the three particles that make up an atom
smallest
Electrons are arranged in shells or _______ that surround the nucleus of an atom
orbitals
Knowing the arrangement of the electrons in atoms of elements , helps us predict the relative _____ of elements
reactivity
Each electrons in an atom is characterized by a unique set of four ______ numbers
quantum
the four quantum numbers are
n l ml ms
the n stands for
principal quantum number
principal quantum number (n) designates the _____ and ______ of the orbital
size and energy
the principal quantum number (n) has integer values starting from
1,2,3, and so forth
the larger the n value, the greater the _________ __________ from the nucleus; greater the _______
average distance, energy
All orbitals that have the same value of n are said to be in the same ______
shell or level
Different shells are numbered by the ______ _________ ______
principal quantum numbers
The l stands for
angular momentum quantum number
the l divides the shells into smaller groups called ______
subshells / sublevels
the angular quantum numbers (l) can take integer values from _____
0 to n-1
the number designations for s,p,d,f are ______
0,1,2,3
the ml stands for
magnetic quantum number
the magnetic quantum number (ml) divides the subshell into individual ______
orbitals
the _____ _______ ______ is known as the home for electrons
magnetic quantum number (ml)
possible integer values of the magnetic quantum number are
-l,…,0,…+l
s subshell has ___ orbital and ___ electrons
1, 2
p subshell has ___ orbital and ___ electrons
3, 6
d subshell has ___ orbital and ___ electrons
5, 10
f subshell has ___ orbital and ___ electrons
7, 14
the total number of orbtilas for a given n value is
n^2
ms stands for
electron spin quantum number
spin quantum number is defined as
+1/2 (spin up) or -1/2 (spin down)
the _________ ________ states that electrons are added to the ______ energy orbitals first before moving to ________ energy orbitals
Aufbau principle, lowest, higher
The ______ _______ ______ states that no two electrons can have all four electronic quantum numbers the ________
Pauli exclusion principle, same
The ______ _______ ______ states that no more than __ electrons in each _________
Pauli exclusion principle, 2, orbital
______ _______ states that the electrons fill each orbital _______ with their spins _______ before any orbitals gets second electron
Hunds rule, singly, parallel
Noble gas core configuration can be used to represent all elements but
H and He
