we know that a atom needs 8 electrons in valance shell to or octet configuration ; duplet (2 electrons in outer most shell) , if an atom have atomic number 11 that is sodium and it can be written has...
Ionic bond
An ionic bond is the type of bond formed between a cation and an anion.
Anion is a negative charge ion.Cation is a positive charge ion.
by a losing an electron!