Periodic Table Review II

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Each column in the periodic table is called a 

• period
• group
• cluster
• unit

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

Which group of the periodic table is composed of inert (not reactive)  gases?

• alkali metals
• alkaline earth metals
• halogens
• noble gases

Which element is not a metal?

• H

• Mg

• Al

• Ca

The atoms along the staircase/border are called

• metals

• nonmetals

• metalloids

• noble gases

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune

Tags

NGSS.HS-PS1-1

Which is an alkali metal?

• Magnesium
• Iron
• Sodium
• Europium

Tags

NGSS.HS-PS1-1

Who arranged the periodic table we use today?

• Nedwlands

• Dobreiner

• Mendeleev

• Cannizzarro

What property did Menedleev use to organize his first periodic table?

• atomic number
• atomic mass
• alphabetical order
• chemical properties