Which of the following is a true statement? А
Periods form horizontal rows; groups form vertical columns
B Groups form horizontal rows; periods form vertical
C Categories form horizontal rows; gases form vertical
D
Gases form horizontal rows; categories form vertical
columns

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."

i think that the answer is c