Its not always accurate because you dont know what they could have done to it before they try to sell it
As you go down group 7 the melting point of the elements will increase, this is because as you go down the group you are gaining an electron shell and the molecule will become bigger. This increase in size means that there will be an increase in the intermolecular forces as well.
So the order would be NF3, NBr3, NI3.
Hopefully this helps!
Th first one is Iron and the second one is Xenon
Answer:
Kelvin is considered to be the best scale for measuring temperature for two reasons: 1, Because the Kelvin scale defines what we mean by temperature. Other scales are now defined in terms of the Kelvin scale
Explanation:
compressibility - is a measure of the relative volume change of a fluid or solid as a response to a pressure (or mean stress) change. (D)
Flammability - ability of a chemical to burn or ignite, causing fire or combustion. (B)
Heat of Combustion - The amount of heat released per unit mass or unit volume of a substance when the substance is completely burned. (A)
Reactivity - the state or power of being reactive or the degree to which a thing is reactive (C)
Hope this helps!!