Periodic Table - H/GT

In the modern periodic table elements are arranged in order of increasing _________.

• 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
• the sum of 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

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

Which element is not a metal?

• Au
• Re
• Al
• B

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune

Which is an alkali metal?

• Magnesium
• Iron
• Sodium
• Europium

• energy levels
• valence electrons
• protons
• neutrons

Tags

NGSS.HS-PS1-1

• energy levels
• valence electrons
• protons
• neutrons

Tags

NGSS.HS-PS1-1