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01:06:36 November05 0924part 1 ionic and covalent bonding… November05 0924part 1 ionic and covalent bonding concept.avi	November05 0924part 1 ionic and covalent bonding concept.avi ionic and covalent bonding covalent bonding electron electrons electronegativity bond difference sodium size water side atoms lot covalent gas fluorine molecule metals kind point hydrogen salt From Bindu Chakravarty 0 likes 0
46:55 chapter 8 part 1 chapter 8 part 1	chapter 8 part 1 periodic properties periodic properties electrons electron size sodium valence elements ions ion gas potassium configuration nucleus element fluorine row nitrogen charge transition reason core From Bindu Chakravarty 0 likes 0