What type of elements make up most of the periodic table?
nonmetals
metals
metalloids
vertical columns in the periodic table are known as:
question 2 options:
periods
groups
families
both b and c
about how many elements are found on the periodic table?
question 3 options:
25
50
110
200
true or false? elements in the same row have similar properties.
true
false
true or false? elements in the same column have the same number of valence electrons.
true
false
what are the particles on the outer shell of an atom called?
question 6 options:
valence electrons
orbiting protons
neutrons
nuclei