O
2-
F
–
Na
+
Mg
+2
Atomic number
8
9
11
12
No of electron
10
10
10
10
" />
O
2-
F
–
Na
+
Mg
+2
Atomic number
8
9
11
12
No of electron
10
10
10
10
" />
O
2-
F
–
Na
+
Mg
+2
Atomic number
8
9
11
12
No of electron
10
10
10
10
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