Neptunium (Np)

Neptunium is a chemical element with the atomic number 93 in the periodic table. Despite being labeled as a synthetically produced substance, there are minuscule amounts of this transuranium element in nature. Neptunium occurs in an amount of 0.0005 parts per trillion by weight in Earth’s crust.  Being a member of the actinides family of … Read more

Plutonium (Pu)

Plutonium is a chemical element with the atomic number 94 in the periodic table. Despite being a synthetically produced substance, some trace amounts of plutonium may occur naturally in combination with other chemical elements. This chemical is discovered as the second synthetic transuranium element of the actinide series of the periodic table. Being a member … Read more

Americium (Am)

Americium is a transuranic element with the symbol Am and atomic number 95 in the periodic table of elements that belongs to the family of actinides. This radioactive substance was discovered as the fourth synthetic transuranium element in the list of fifteen radioactive metallic elements that include actinium, thorium, protactinium, uranium, neptunium, plutonium, americium, curium, … Read more

Curium (Cm)

Curium is a radioactive chemical element with the symbol Cm and atomic number 96 in the periodic table of elements. This rare-earth element is not found in Earth’s crust due to the fact that it’s a man-made substance. As a member of the family of transuranic elements, this actinide has three and occasionally four valence … Read more

Berkelium (Bk)

Berkelium is a chemical element with the symbol Bk and the atomic number 97 in the periodic table of elements. Since it’s synthesized in a laboratory, berkelium is not found naturally in its elemental form in Earth’s crust. Being a member of the actinide family of periodic table elements, this radioactive metal shares the physical … Read more

Californium (Cf)

Californium is a radioactive chemical element with the symbol Cf and atomic number 98 in the periodic table of elements. It’s a synthetically produced element, hence it cannot be found in Earth’s crust. Being a member of the actinides family of periodic table elements, californium’s molecular structure can be divalent or trivalent.  Chemical and Physical … Read more

Einsteinium (Es)

Einsteinium is a chemical element with an atomic number of 99 in the periodic table of elements. It’s a synthetically produced substance that has not been found in Earth’s crust. Being a member of the actinide elements family of the periodic table, this transuranium element has three valence electrons and emits extremely high radiation.  Chemical … Read more

Fermium (Fm)

Fermium is a chemical element with an atomic number of 100 in the periodic table of elements. Being a synthetically produced radioactive substance, this lanthanide does not exist naturally in Earth’s crust. This is the heaviest synthetically produced element that has been created by bombarding lighter elements with neutrons.  Chemical and Physical Properties of Fermium … Read more

Mendelevium (Md)

Mendelevium is a radioactive chemical element with atomic number 101 in the periodic table. Since it’s a synthetically produced chemical, it does not occur naturally in Earth’s crust. As a member of the actinide series of the periodic table, this radioactive rare earth metal presumably has two and three valence electrons, which have been determined … Read more

Nobelium (No)

Nobelium is a chemical element with the atomic number 102 in the periodic table. Since it’s a  synthetically produced substance, element 102 cannot be found naturally in Earth’s crust.  According to Mendeleev’s classification of elements, nobelium is a member of the actinides family of the periodic table. It has three valence electrons arranged in the … Read more