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10 questions
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
The groups on the periodic table correspond to the number of ________ in an atom.
valence electrons
energy levels
protons
neutrons
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 3 energy levels with electrons?
Al
C
K
I
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
How is the periodic table organized? (check all that are true)
Increasing by atomic number
By the number or energy levels in an atom
By the number of valence electrons in an atom
By the number of neutrons
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