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Measurement of Matter — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceMeasurement of Matter1 Mark
Question
Metals with variable valency
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Answer

(a) Iron (Ferrum)
(i) $Fe ^{2+}$ - Ferrous [Iron - II]
(ii) $Fe ^{3+}$ - Ferric [Iron - III](b) Copper (Cuprum)
(i) $Cu ^{+}$- Cuprous [Copper -1]
(ii) $Cu ^{2+}$ - Cupric [Copper - II]
(c) Mercury (Hydragyrum)
(i) $Hg ^{+}$- Mercurous [Mercury -1]
(ii) $Hg ^{2+}$ - Mercuric [Mercury - II]

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