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Subjects
Science State Board
Class 8
Atomic structure
Introduction to valency and chemical equations
7.
Ion and their symbols
Exercise condition:
8
m.
Match the correct ion on their symbols:
Information
Author
Positive valency
Hydroxide
Bromine
Chlorine
Potassium
electron gain
*
-
+
=
Cadmium cation
Cd^2{^+}
Kd^2{^-}
Cd^2{^-}
Kd^2{^+}
Nitrate anion
NO_3{^+}
NO_2{^-}
Ni_3{^-}
NO_3{^-}
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