Is it all ions have a noble gas既electronic configuration

It is absolutely wrong to think that!!
圖片參考：http://hk.yimg.com/i/icon/16/27.gif

Only most group one, two, six and seven elements would have noble gas electronic configurations once they form ionic compound if they can.
Counter example,
Cu form Cu2+ which does NOT have a a noble gas electronic configuration.
This also applies to most transition metal ions.
圖片參考：http://hk.yimg.com/i/icon/16/41.gif

冇錯
+ o既ion係指loss左electrons
- o既ion係指gain左electrons


留意番
noble gas configuration o既outermost electrons係可以有8粒或者兩粒架
兩粒o既有Li+, Be2+
八粒o既比較多, 例如Na+, Mg2+

H+比較特別
佢得一粒electron
loss左electron之後佢就冇electron架啦