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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:
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Author
Negative valency
Sodium
Bromine
Zinc
Magnesium
electron lose
\(=\)
\(+\)
\(+\)
\(-\)
Chromium cation
\(Cr^3{^0}\)
\(Cr^3{^+}\)
\(Kr^3{^+}\)
\(Cr^3{^-}\)
Nitrate anion
\( NO_3{^-} \)
\( NO_2{^-} \)
\( NO_3{^+} \)
\( Ni_3{^-} \)
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