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CHEMISTRY CH13 Chemical Bonding — Science STD 9 — Question

Tamilnadu BoardEnglish MediumSTD 9ScienceCHEMISTRY CH13 Chemical Bonding1 Mark
Question
Ca in CaH2
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Answer

 CaH2
1(Ca) + 2 (H) = 0
x + 2 (-1) = 0
x -2 = 0
x = + 2
Oxidation number of Ca in CaH2 is +2

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