No, they have very low melting.
no
Yes non metals do have high melting and boiling points. This is because they have strong intemolecular forces that are hard to overcome.A2. Their melting points vary. Obviously gases such as nitrogen and oxygen have low melting points, but Silicon (1414oC) and Diamond ( around 1700oC) are rather high. Phosphorous and Sulfur on the other hand are rather low.
positive ions have high melting points
Barium oxide has a high melting point of around 1,923 degrees Celsius. This is typical for many metal oxides, as they tend to have high melting points due to the strong ionic bonds between the metal and oxygen atoms.
They have low melting points and high reactivity.
It varies. Boron and thallium both have relatively high melting points while gallium and indium have very low melting points.
In general, ionic compounds have high melting points due to the strong electrostatic forces holding the ions together in a lattice structure. This results in a significant amount of energy required to break these bonds, leading to high melting points.
metals
because the molecules of oxygen only react at high temperatures
All metals have different melting points but they are all high
Nitrogen and oxygen can form nitrogen dioxide (NO2) or nitric oxide (NO) depending on the conditions. Nitrogen oxides are produced when nitrogen and oxygen react at high temperatures, such as in combustion processes.
That depends on the solid: ice has a very low melting point, lard and butter have low melting points, chocolate has a relatively low melting point, wax has an intermediate melting point, lead has a high melting point, iron has a very high melting point, tungsten has an extremely high melting point.