Nobelium Element in Periodic Table | Atomic Number Atomic Mass

Nobelium Element:

Nobelium is the penultimate chemical element in the actinide series of the periodic table. It is denoted by the symbol No and its atomic weight is 102. It is preceded by mendelevium and succeeded by the last element lawrencium in the 7^th period. 'No' is the tenth transuranic element and it is radioactive in nature. Its synthesis is similar to that of elements with atomic number 100 and above, involving bombardment of lighter elements with charged particles in particle accelerators. Out of the twelve known isotopes in existence, nobelium-259 is observed to be the most stable although nobelium-255 with much shorter life is extensively used in reactions because of its preponderant production.

In spite of the fact not many chemical reactions have been carried out, nobelium is noted to exhibit similar chemical properties of its lighter congener ytterbium in the lanthanide series. 'No' can exist in two oxidation states +2 and +3, with the +2 oxidation state more stable.

Uses Of Nobelium Element:

• Being a radioactive element, a few of atoms of nobelium have ever been made and it does not have uses beyond scientific research purposes.

Nobelium Element Information:

Discovery year:1966

Discovered by:Joint Institute for Nuclear Research

Atomic number: 102

Relative atomic mass: [259]

Electron configuration: [Rn] 5f¹⁴ 7s²

Block: f-block

Other elements in the same block:

Cerium, Praseodymium, Neodymium, Promethium, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium, Lutetium, Thorium, Protactinium, Uranium, Neptunium, Plutonium, Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium and  Lawrencium are the elements in the same block.

Period: period 7

Other elements in the same period:

Francium, Radium, Actinium, Thorium, Protactinium, Uranium, Neptunium, Plutonium, Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Lawrencium, Rutherfordium, Dubnium, Seaborgium, Bohrium, Hassium, Meitnerium, Darmstadtium, Roentgenium, Copernicium, Nihonium, Flerovium, Moscovium, Livermorium, Tennessine and Oganesson.

Group: Actinides

Other elements in the same group:

Thorium, Protactinium, Uranium, Plutonium, Americium,  Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Nobelium and Lawrencium are the elements in the same group.

Other elements in the same orbital:

Actinium, Thorium, Protactinium, Uranium, Neptunium, Plutonium, Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium and Lawrencium are the elements in the same orbital.

Allotropes: none

Key isotopes: ²⁵⁹No 

Melting point: 827°C, 1521°F, 1100 K

Boiling point: unknown

Element category: actinide

Density (g cm⁻³): unknown

CAS number: 10028-14-5

Color: -