Are the trends for melting and boiling point the same for non metals?

No, the trends for melting and boiling points in nonmetals are not the same. Generally, nonmetals exhibit increasing melting and boiling points as you move down a group in the Periodic Table due to stronger van der Waals forces and increased molecular size. However, across a period, the melting and boiling points can vary significantly, often peaking at specific elements, such as carbon, before decreasing again. Thus, while there are some similarities, the trends can differ based on the specific group or period in question.