True or False. The atomic number is the number of electrons in an element.
False
Vertical columns are called?
Groups
True or false. The periodic table is a chart that organizes all known chemical elements.
True
True or False. The atomic mass is located at the top of the box.
False
Horizontal rows are called?
Periods
True or False. Elements belonging to the same family have the same number of valence electrons.
True
How many periods can be found in the periodic table?
7
In what group we can find the Transition Metals.
Group 3-12
Group 1 is also known as .......
Alkali Metals
Who developed the periodic table?
Dimitri Mendeleev
True or False. Elements in the same group have different properties.
False