The element which has the electronic configuration is CHLORINE.
The atomic number of chlorine is 17 and it has 7 valence electrons in its outermost shell. Because it needs only one more electrons to have a stable octet, it usually react with metals from group one of the periodic table who are normally willing to donate the single electrons in their outermost shells. The ground state electronic configuration of chlorine atom is 1S^2 2S^2 2P^6 3S^2 3P^5.
It's A. volume
Pressure =

with const depends on the chosen unit of volume
I think so...
Ca, V, Cu, Kr
Remember a period is a the horizontal rows in the Periodic Table.
Answer:
Water vapor has mostly disappeared at colder elevations and its effect on weather turbulence.
Explanation: