What makes the atomic radius change along a period in the periodic table? A. The increased atomic mass makes the atomic radius bigger.
B. More protons in the nucleus pull the electrons in, making the
atomic radius smaller.
C. More electrons pair in orbitals, making the atomic radius smaller.
D. More electrons in the valence shell make the radius bigger.

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: