What is the electron configuration of Li+?
Your starting point here will be the electron configuration of a neutral lithium atom,
A quick look in the periodic table will reveal that lithium is located in period 2, group 1, and that it has an atomic number equal to
This means that a neutral lithium atom will have a total of
Its electron configuration will be
#"Li: " 1s^2 color(red)(2)s^1#
Now, the lithium cation,
This means that the electron configuration of the
To write this using noble gas shorthand notation, use the electron configuration of the noble gas that comes before lithium in the periodic table.
#"He: " 1s^2#
This means that you have
Here the notation
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