0
Q
Who was the first to notice the relationship between the elements?
A
Mendeleev.
1
Q
What are groups also known as?
A
Families.
4
Q
What was his periodic table arranged by?
A
Atomic mass.
5
Q
Who later discovered that the periodic nature if the events was associated like atomic number, not atomic mass?
A
Moseley.
6
Q
What else are rows known as?
A
Periods.
7
Q
Where are non metals located on the periodic table?
A
The right side.
8
Q
Metals are where on the stair step?
A
On the left.
9
Q
Which group touch the stair step?
A
Metalloids.
