Module 3: 7.1 the periodic table

Question 1

how is the periodic table arranged?

Answer 1

the elements are arranged in order of increasing atomic number

Question 2

what is similar with the elements in the same group

Answer 2

each element in a group has atoms with the same number of outer-shell electrons and similar chemical properties

Question 3

what is similar with the elements in the same period

Answer 3

there are repeating physical and chemical trends in the properties of the elements (periodicity)
Same number of electron shells