Periodic Table

What are the three main groups of the periodic table?

• groups

• metal

• nonmetals

• metalloids

• periods

What are the horizontal rows on the periodic table called?

• periods

• groups

• metals

• nonmetals

• metalloids

What does the number of proton tell us?

• electrons

• atomic number

• atomic mass

• neutrons

How many protons and electrons does nickel have?

• 28

• 58.69

The atom with the largest atomic radius in Group 18 is - 

• Ar
• He
• Kr
• Rn

As you move down a group, atomic radius increases because - 

• you add more and more neutrons
• you add more and more protons
• you add more and more shells (energy levels)
• you add more atomic mass

Francium (Fr) has the lowest ionization energy in Group 1 because - 

• it has the smallest number of valence electrons
• it has the greatest atomic mass
• it has the greatest number of protons, so it attracts its electrons the strongest
• its 1 valence electron is very far from the nucleus, so little energy is needed to remove it

Rows on the period table are called _____ while columns are called _____.

• groups, families
• groups, periods
• periods, groups
• families, groups

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

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

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune