periodicity

Question 1

how is the periodic table arranged? (3 ways)

Answer 1

by increasing atomic (proton) number
in periods (horizontal rows) showing repeating trends in physical/chemical properties
in groups (vertical columns) with similar chemical properties and the same number of outer shell electrons

Question 2

what is periodicity?

Answer 2

a repeating trend in an element’s properties e.g. ionisation energy, electron configuration

Question 3

what do the blocks of the periodic table correspond to? name the blocks

Answer 3

s, p, d, f
blocks correspond to the highest energy sub shell in an element

Question 4

describe the position of each block in the periodic table

Answer 4

s- left of periodic table, group 1 and 2
d- middle of periodic table, transition elements
p- right of periodic table, groups 3-8
f- bottom of periodic table, lanthanides/actinides