2.wwhat are satble elements with valency zero
3.wht is difference between polar and non polar covalent bonds
4.what is the shape of sulphur molecule
5.whay covalent compounds dont conduct electricity
6.why covalent compounds have low mp and bp
7.why covalent are compounds are soluble only in non polar solvents
8.what carbbon undergo only covalent bondings
9.can metals undergo covalent bondings .explain
10.why only non metals undego covalent bondinga
11.
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