Compare elements
Two elements side by side: what they have in common, what separates them, and the numbers behind it. Good for settling arguments and for the "which is heavier" questions that come up in class.
Sodium vs Potassium
Both are alkali metals, so they share the same broad chemistry.
Lithium vs Sodium
Both are alkali metals, so they share the same broad chemistry.
Hydrogen vs Helium
Hydrogen is a non-metal (diatomic non-metal); Helium is a non-metal (noble gas).
Helium vs Neon
Both are noble gass, so they share the same broad chemistry.
Oxygen vs Nitrogen
Both are diatomic non-metals, so they share the same broad chemistry.
Carbon vs Silicon
Carbon is a non-metal (polyatomic non-metal); Silicon is a metalloid (metalloid).
Iron vs Copper
Both are transition metals, so they share the same broad chemistry.
Copper vs Zinc
Both are transition metals, so they share the same broad chemistry.
Copper vs Silver
Both are transition metals, so they share the same broad chemistry.
Silver vs Gold
Both are transition metals, so they share the same broad chemistry.
Gold vs Platinum
Both are transition metals, so they share the same broad chemistry.
Aluminium vs Magnesium
Aluminium is a metal (post-transition metal); Magnesium is a metal (alkaline earth metal).
Aluminium vs Titanium
Aluminium is a metal (post-transition metal); Titanium is a metal (transition metal).
Iron vs Titanium
Both are transition metals, so they share the same broad chemistry.
Nickel vs Cobalt
Both are transition metals, so they share the same broad chemistry.
Lead vs Tin
Both are post-transition metals, so they share the same broad chemistry.
Chlorine vs Fluorine
Both are diatomic non-metals, so they share the same broad chemistry.
Chlorine vs Bromine
Both are diatomic non-metals, so they share the same broad chemistry.
Bromine vs Iodine
Both are diatomic non-metals, so they share the same broad chemistry.
Argon vs Krypton
Both are noble gass, so they share the same broad chemistry.
Xenon vs Radon
Both are noble gass, so they share the same broad chemistry.
Calcium vs Magnesium
Both are alkaline earth metals, so they share the same broad chemistry.
Calcium vs Strontium
Both are alkaline earth metals, so they share the same broad chemistry.
Sulfur vs Phosphorus
Both are polyatomic non-metals, so they share the same broad chemistry.
Uranium vs Plutonium
Both are actinides, so they share the same broad chemistry.
Uranium vs Thorium
Both are actinides, so they share the same broad chemistry.
Mercury vs Lead
Mercury is a metal (transition metal); Lead is a metal (post-transition metal).
Tungsten vs Molybdenum
Both are transition metals, so they share the same broad chemistry.
Lithium vs Cobalt
Lithium is a metal (alkali metal); Cobalt is a metal (transition metal).
Neodymium vs Samarium
Both are lanthanides, so they share the same broad chemistry.
Zinc vs Tin
Zinc is a metal (transition metal); Tin is a metal (post-transition metal).
Nitrogen vs Phosphorus
Nitrogen is a non-metal (diatomic non-metal); Phosphorus is a non-metal (polyatomic non-metal).
Boron vs Aluminium
Boron is a metalloid (metalloid); Aluminium is a metal (post-transition metal).
Germanium vs Silicon
Both are metalloids, so they share the same broad chemistry.
Arsenic vs Antimony
Both are metalloids, so they share the same broad chemistry.
Radium vs Radon
Radium is a metal (alkaline earth metal); Radon is a non-metal (noble gas).
Chromium vs Manganese
Both are transition metals, so they share the same broad chemistry.
Cesium vs Francium
Both are alkali metals, so they share the same broad chemistry.
Beryllium vs Magnesium
Both are alkaline earth metals, so they share the same broad chemistry.
Osmium vs Iridium
Both are transition metals, so they share the same broad chemistry.