Periodic table trends /Chem Math

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

The Modern Periodic Table of Elements is arranged by

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

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

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

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

Elements in a ..................have similar chemical properties.  

• period
• group
• row

• 2

• 3

• 5

Tags

NGSS.MS-PS1-1

Which element has 3 valence electrons?

• A

• B

• E

• C

Where are the nonmetals on the Periodic Table?

• To the left
• In the upper right hand corner
• On the zigzag line
• At the bottom

What does the atomic number of an atom represent?

• Number of neutrons in the atom
• Number of protons in the atom
• Number of electrons in the atom
• Number of shells in the atom

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

• Ar
• He
• Kr
• Rn