What is common about the particles O2-,F-, Ne ,Na+ and Mg2+

1.	What is common about the particles O2-,F-, Ne ,Na+ and Mg2+
Answer» ANSWER: They have same NUMBER of ELECTRON in their ATOM or ion. All of them have 10 electron.

Answer»

They have same NUMBER of ELECTRON in their ATOM or ion.

All of them have 10 electron.

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