Advanced Trends
This trend increases as atoms get smaller across a period.
Electronegativity
Isotopes have different numbers of these.
Neutrons
This element is named after Earth.
Tellurium
This element has the lowest density.
Hydrogen
This element has atomic number 20.
Calcium
This trend decreases down a group due to shielding.
Ionization energy
This is the weighted average of isotopes.
Atomic mass
This element is named after Germany.
Germanium
This element has the highest density.
Osmium
This element has symbol Zn.
Zinc
Shielding is caused by these particles.
Electrons
This number equals protons plus neutrons.
Mass number
This element is named after the moon.
Selenium
This element has the highest melting point.
Tungsten
This element is a noble gas with atomic number 10.
Neon
This trend refers to atom size.
Atomic radius
This isotope is used in radiocarbon dating.
Carbon-14
This element is named after a scientist and has symbol Es.
Einsteinium
This element is liquid at room temperature and is a metal.
Mercury
This element has 6 valence electrons and is in Group 16.
Oxygen
This trend explains how easily electrons are lost.
Ionization energy
This hydrogen isotope has no neutrons.
Protium
This element is named after Niels Bohr.
Bohrium
This element is liquid at room temperature and is a nonmetal.
Bromine
This element is directly below chlorine on the periodic table.
Bromine