Chemistry, 20.11.2020 01:00 Sofianevaeh1339

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

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Which of the following is a true statement? А
Periods form horizontal rows; groups form verti...