WAEC - Chemistry (2013 - No. 4)
An atom of an element X gains two electrons. The symbol of the ion formed is
X +
X 2+
X 2-
X -
Explicació
X gained two electrons. X = 2-.
The ion formed is X\(^{2-}\).
X gained two electrons. X = 2-.
The ion formed is X\(^{2-}\).