Midterm 4

Rows on the periodic table are called...

• groups

• periods

• families

• shells

Columns on the periodic table are called...

• periods

• groups or families

• valence

• energy levels

Rows on the periodic table correspond to the number of ________ in an atom.

• neutrons

• protons

• electrons

• energy levels

How many valence electrons does a nitrogen atom have?

• 3

• 7

• 5

• 1

Which element has 2 valence electrons?

• H

• Ca

• Na

• C

Which element has 4 valence electrons and 2 energy levels with electrons.

• Calcium

• Nitrogen

• Carbon

• Copper

Which group has elements with a full valence shell?

• Group 1

• Group 2

• Group 15

• Group 18

What is the atomic mass of "F"

• 9
• 18
• 17
• 19

How do you find out the number of neutrons in an atom?

• atomic number
• atomic mass
• charge
• atomic mass - atomic number

How are elements ordered on the Periodic Table?

• Alphabetical Order
• By their color.
• By their atomic mass.
• By their atomic number.