The Periodic Table, Periodic Law and Electrons in the Atom

• energy levels
• valence electrons
• protons
• neutrons

• energy levels
• valence electrons
• protons
• neutrons

• Group 1
• Group 17
• Group 2
• Group 18

• Metals
• Nonmetals
• Metalloids

• Metals
• Nonmetals
• Metalloids

• Metals
• Nonmetals
• Metalloids

Vertical columns on the periodic table are called ___?

• groups

• periods

• rows

• families

Which color on the image of the periodic table corresponds with the halogens.

• red

• black

• blue

• orange

Which color on the image of the periodic table corresponds with the lanthanides.

• red

• black

• blue

• orange

Mendeleev first ordered the periodic table of elements by increasing

• atomic number

• atomic mass

• atomic symbol

• atomic weight