Groups and Periods
Elements by Electron Configuration
Metal, Nonmetal or Metalloid
Common ion formed
Periodic Trends
100
Group 1, Period 2
What is lithium
100
1s2 2s2 2p2
What is carbon
100
Carbon
What is nonmetal
100
Fluorine
What is -1
100
More electronegative: O or Si
What is O
200
Period 4, Group 13
What is gallium
200
[Ar] 4s2 3d4
What is chromium
200
Paladium
What is metal
200
Sodium
What is +1
200
Higher ionization energy: N or Li
What is N
300
Period 6, Group 17
What is astatine
300
1s2 2s2 2p6 3s2 3p6 4s2 3d10
What is zinc
300
Helium
What is nonmetal
300
Sulfur
What is -2
300
Larger atomic radius: C or Sn
What is Sn
400
Period 5, Group 5
What is niobium
400
[Xe] 6s2 4f1
What is lanthanum
400
Arsenic
What is metalloid
400
Magnesium
What is +2
400
Lower electronegativity: In or Te
What is In
500
Period 6, Group 11
What is gold
500
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 5d10 4f14 6p2
What is lead
500
Antimony
What is metalloid
500
Aluminum
What is +3
500
Lower ionization energy: Rb or Na
What is Rb
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