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Study and complete the table below by dragging and dropping the missing information. The letters do not represent the actual symbols of the elements.
Atom
Electron
ION
Valency
Oxidation
X
2.3
X
3+
Y
2.5
Y
3-
W
2.8.2
W
2+
Z
2.7
Z
-
3
+3
3
-3
2
+2
1
-1