Answer:
Any of the answers given will work
Explanation:
I literally just did it.
The CH4 molecule has the lowest molecular weight, so it has the lowest boiling point.
Hope I helped :)
<span>The electronic configuration of cobalt is :1s2 2s2 2p6 3s2 3p6 3d7 4s2 </span>
Electronegativity measures how much an atom likes to pull electrons away from another one. Ionization energy measures how much an atom doesn't want to lose electrons. As an atom that wants to gain electrons will clearly not want to lose electrons, these trends are basically identical.
An element cannot be broken down any further. Elements can be found on the periodic table
