Berkelium Element in Periodic Table | Atomic Number Atomic Mass

Berkelium Element:

Berkelium is a transuranic radioactive chemical element and it is a member of group 3 and period 7 and in the periodic table. The atomic number of berkelium is 97 and it is indicated by symbol is Bk. Berkelium is a member of the actinide and transuranium element series. It was the fifth tranuranium element discovered after plutonium, curium, neptunium and americium. It is a soft, silvery-white, radioactive metal. About twenty isotopes and six of berkelium have been characterized. ²⁴⁷Bk, ²⁴⁸Bk and ²⁴⁹Bk are the longest half-lives are observed. All isotopes are radioactive. ²⁴⁹Bk isotope is the easiest to synthesize.

Uses of Berkelium Element:

• It is used mainly for scientific research.
• Berkelium-249 is used for the production of lawrencium-260.

Berkelium Element Information:

Discovery year:1949

Discovered by:Lawrence Berkeley National Laboratory

Atomic number: 97

Relative atomic mass: [247]

Electron configuration: [Rn] 5f⁹ 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, Californium, Einsteinium, Fermium, Mendelevium, Nobelium 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, Californium, Einsteinium, Fermium, Mendelevium, Nobelium, 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, 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, Californium,Einsteinium, Fermium, Mendelevium, Nobelium and Lawrencium are the elements in the same orbital.

Allotropes: none

Key isotopes: ²⁴⁷Bk, ²⁴⁹Bk 

Melting point: 986°C, 1807°F, 1259 K

Boiling point: unknown

Element category:  actinide

Density (g cm⁻³): 14.78

CAS number: 7440-40-6

Color: silvery

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