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ICSE Class 10 Chemistry 2020 Paper

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Draw the electron dot diagram for the compounds given below. Represent the electrons by (.) and ( xx ) in the diagram.
[Atomic No. : Ca=20,O=8,Cl=17,H=1\mathrm{Ca}=20, \mathrm{O}=8, \mathrm{Cl}=17, \mathrm{H}=1 ]
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Question : 45 of 86
Marks: +1, -0
Water molecule
Solution:  
Water molecule H2O-\mathrm{H}_2\mathrm{O}
  H=1\;\mathrm{H}=1
  O=8=2,6\;\mathrm{O}=8=2,6
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