a. If an atom of sodium contains 1 valence electron and an ion of sodium contains 8 and has a 1+ charge, what did the sodium atom do to become a sodium ion? b. If an atom of oxygen contains 6 valence electrons and an ion of oxygen contains 8 and has a 2− charge, what did the oxygen atom do to become an oxygen ion?
a. If an atom of sodium contains 1 valence electron and an ion of sodium contains 8 and has a 1+ charge, what did the sodium atom do to become a sodium ion?
b. If an atom of oxygen contains 6 valence electrons and an ion of oxygen contains 8 and has a 2− charge, what did the oxygen atom do to become an oxygen ion?
a. If an atom of sodium contains 1 valence electron and an ion of sodium contains 8 and has a 1+ charge, what did the sodium atom do to become a sodium ion?
Sodium atom (Na) :
electronic configuration -1s2 2s2 2p6 3s1
outer most shell ( valence shell ) is = 3rd
number of electrons in valence shell = 1
Sodium ion (Na+ ) :
electronic configuration -1s2 2s2 2p6
outer most shell ( valence shell ) is = 2nd
number of electrons in valence shell = 8
Na ---------------> Na+ + e
1s2 2s2 2p6 3s1 1s2 2s2 2p6
Sodium atom looses 1 electron from valence shell (3rd) to become Sodium ion
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