Why does magnesium bromide have a high melting point?
Because of the Strong ionic bond between the ions in the compound i.e Mg2, Br-1
they require a lot of energy to brake hence the high melting point
Magnesium chloride is ionic compound. There is a strong electrostatic force of attraction between 2 chloride atoms and 1 magnesium atom. The bond holding the atoms together is known as ionic bond. A high heat energy have to be applied to break the strong bond holding the atoms, resulting the compound to record a high melting point.
Magnesium oxide is used to make linings for some furnaces. It is known as a refractory material - which just means that it is resistant to heat.Magnesium oxide has a high melting point (2852°C) and so resists the high temperatures in a furnace. Its melting point is high because of the strong ionic bonds between the small Mg2+ and O2- ions.
If ethidium bromide have a higher melting point than 120 C 260 - 262 C could it be autoclaved with the medium you are using without being degarded or its?
Magnesium oxide has a very high bond strength, which results from the fact that the difference in electronegativity of the two elements, magnesium and oxygen, is extremely high. To put it in other words, the very negatively charged oxygen and the very positively charged magnesium atoms will strongly attract eachother. This tends to hold them in place against the tendency of heat to break them apart, hence, a high temperature is need to melt this…
resistance means the te power to resist the heat or the electric current/ eg: tungsten which is used to make the filament of the bulb has a high melting point even when it burns on a high temperature so it has a high resistance, whereas in the wire of an electrical fuse has a low melting point as it burns at a high temperature...