List the following gases in order of increasing average molecular velocity at 25 degrees Celcius: H20, He, HCI, BrF, and NO2 (I'm so confused... thank you in advance!!!) ​

One of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description?

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

In pqr m< p=60 m< q= 30 and m