7.1 the periodic table module 3 Flashcards
1
Q
what did Mendeleev arrange the periodic table in?
A
increasing mass number
2
Q
what are the position of elements linked to?
A
their physical and chemical properties
3
Q
how are elements arranged in the periodic table nowadays?
A
increasing atomic number
4
Q
what are vertical columns called?
A
groups
5
Q
what are horizontal rows called?
A
periods
6
Q
what is periodicity?
A
repeat trend in properties of elements across a period
