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'''Thallium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Tl. Its [[atomic number]

'''Bismuth''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Bi. Its [[atomic number]

'''Nobelium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] No and its [[atomic numb

'''Neodymium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Nd. Its [[atomic number]

'''Californium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Cf. Its [[atomic number]

'''Platinum''' is a [[Chemical elements|chemical element]], typically found as a [[Solid_(state_of_matter)|solid]]

'''Lawrencium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Lr and its [[atomic numb

'''Hafnium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Hf. Its [[atomic number]

'''Protactinium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Pa. Its [[atomic number]

'''Francium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Fr. Its [[atomic number]

* Norman E. Holden. (2001) History of the Origin of the Chemical Elements and Their Discoverers. Prepared for the 41st IUPAC General Assembly in Bris * D. Trapp (2007) [http://web.me.com/dtrapp/Elements/elements.html The Chemical Elements: Their Discovery and the Origins of their Names.] A useful and interesting

'''Thorium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Th. Its [[atomic number]

'''Neon''' is a [[Chemical elements|chemical element]], typically found as a [[gas]] in its elemental form. It

'''Cerium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Ce. Its [[atomic number]

'''Nickel''' is a [[Chemical elements|chemical element]], typically found as a [[Solid_(state_of_matter)|solid]]

'''Chlorine''' is a [[Chemical elements|chemical element]], typically found as a [[gas]] in its elemental form. It

'''Lanthanum''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] La. Its [[atomic number]

'''Curium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Cm. Its [[atomic number]

'''Mercury''' is a [[Chemical elements|chemical element]], typically found as a [[liquid]] in its elemental form.

'''Gallium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Ga. Its [[atomic number]

{{r|Chemical elements}}

The property of the unstable [[nuclei]] of chemical elements to decay into another [[isotope]], emitting energy or particles

'''Radon''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Rn. Its [[atomic number]

'''Strontium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Sr. Its [[atomic number]

'''Molybdenum''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Zr. Its [[atomic number]

'''Xenon''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Xe. Its [[atomic number]

{{r|Chemical elements}}

'''Manganese''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Mn. Its [[atomic number]

'''Osmium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Os. Its [[atomic number]

'''Niobium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Y. Its [[atomic number]]

'''Zirconium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Zr. Its [[atomic number]

'''Vanadium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] V. Its [[atomic number]]

'''Tungsten''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] W. Its [[atomic number]]

'''Chromium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Cr. Its [[atomic number]

'''Germanium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Ge. Its [[atomic number]

'''Bromine''' is a [[Chemical elements|chemical element]], typically found as a [[liquid]] at room temperature in

...[neutron]]s. [[radioactivity|Radioactive]] isotopes are unstable forms of chemical elements that break down into smaller elements and release radiation in the process

'''Titanium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Ti. Its [[atomic number]

'''Silicon''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Si. Its [[atomic number]

'''Helium''' is a [[Chemical elements|chemical element]], typically found as a [[gas]] in its elemental form. It

'''Magnesium''' is a [[Chemical elements|chemical element]], typically found as a [[Solid_(state_of_matter)|solid]]

'''Beryllium''' is a [[Chemical elements|chemical element]], typically found as a [[Solid_(state_of_matter)|solid]]

'''Sodium''' is a [[Chemical elements|chemical element]], typically found as a [[Solid_(state_of_matter)|solid]]

'''Krypton''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Kr. Its [[atomic number]

{{r|Chemical elements}}

'''Arsenic''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] As. Its [[atomic number]

'''Americium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Am. Its [[atomic number]

'''Argon''' is a [[Chemical elements|chemical element]], typically found as a [[gas]] in its elemental form. It

'''Barium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Ba. Its [[atomic number]