Liquid element(s) at 298 K - Answers Bromine & Mercury
Gas element(s) at 298 K - Answers Hydrogen, Helium, Nitrogen, Oxygen, Fluorine, Neon, Chlorine, Argon,
Krypton, Xenon, Radon
Diatomic Elements - Answers Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, Iodine
Name for Groups 1,2 & 13-18 - Answers Representative Elements
Name for Groups 3-12 - Answers Transition Elements
Name for Group 1 - Answers Alkali Metal
Name for Group 2 - Answers Alkaline Earth Metal
Name for Group 17 - Answers Halogens
Name for Group 18 - Answers Noble Gases
Name for Elements 58-71 - Answers Lanthanide Series
Name for Elements 90-103 - Answers Actinide Series
Radioisotope - Answers An isotope of an element that has an unstable nucleus.
Last natural occurring element - Answers Uranium
All elements with an atomic number greater than 83 - Answers Radioactive Elements
All elements with an atomic number greater than 92 - Answers Transuranium
Metalloids - Answers Boron, Silicon, Germanium, Antimony, Arsenic, Tellurium
Metals - Answers Elements to the left of the zig-zag line (staircase) except hydrogen
Nonmetals - Answers Elements to the right of the zig-zag line (staircase)
Two or more forms of the same element that exist in the same phase but have different structures and
properties - Answers Allotrope
Periodic Law - Answers The physical and chemical properties of the elements are a periodic functions of
their atomic numbers
Period - Answers Horizontal row in the Periodic Table
Group - Answers Vertical columns in the Periodic Table