WebMar 7, 2009 · Only metals, ionic compounds and covalent network compounds with delocalised electrons conduct electricity. Naphthalene is a covalent compound with delocalised electrons, but it exists as discrete ... WebThe properties of several unknown solids were measured. Solid Melting Point Other Properties A 1000 "C does not conduct electricity B 850 C conducts electricity in the liquid state, but not in the solid state c 750 …

Solved: Substance B is hard, does not conduct electricity, and mel ...

WebThey are almost all hard, high-melting solids that conduct heat and electricity well. They readily form alloys and lose electrons to form stable cations. In addition, transition metals form a wide variety of stable coordination compounds , in which the central metal atom or ion acts as a Lewis acid and accepts one or more pairs of electrons. WebFigure 10.16 "Covalent Network Solids" shows the bonding in a covalent network solid. Generally, covalent network solids are poor conductors of electricity, although their ability to conduct heat is variable: diamond is one of the most thermally conductive substances known, while SiO 2 is about 100 times less thermally conductive. Most covalent ... bold front doors

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WebDec 27, 2016 · 2. I learned in class that solutions of polar covalent compounds are weakly conductive, while ionic solutions are strongly conductive. But I'm getting different … WebAll covalent network structures have very high melting points and boiling points because many strong covalent bonds need to be broken. They are all hard, and do not conduct … WebSubstance D is soft, does not conduct electricity, and has a melting point of 185 °C. Substance A is shiny, conducts electricity well, and melts at 975 °C. Substance A is likely a(n): (a) ionic solid (b) metallic solid (c) molecular solid (d) covalent network solid. Substance B is hard, does not conduct electricity, and melts at 1200 °C. bold fresh tour