97 Bk Berkelium 247.0 u

Berkelium

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Period
7
Group
—
Block
f-block
Phase (STP)
Solid

Berkelium is a synthetic element named after Berkeley, California. It was first produced in 1949 at the University of California.

About Berkelium

Berkelium takes its name from Berkeley, California, where the element was first produced in 1949 at the University of California. It is a synthetic actinide of atomic number 97 with a relative atomic mass of 247.0, a configuration of [Rn] 5f9 7s2, and an electronegativity of 1.3. Under standard conditions it is a solid. Like the actinides immediately around it, berkelium exists only in quantities made deliberately by neutron irradiation or accelerator bombardment, and the total mass ever prepared is measured in fractions of a gram. Its practical significance lies in nuclear synthesis rather than chemistry: berkelium targets have served as the starting material from which still heavier elements were subsequently created.

Physical Properties

Atomic Mass 247.0 u
Phase at STP Solid

Electronic Properties

Electronegativity 1.3

Electron Configuration

Configuration [Rn] 5f⁹ 7s²

Electron Shell Configuration

Berkelium electron shell configuration Bk 2e⁻ 8e⁻ 18e⁻ 32e⁻ 27e⁻ 8e⁻ 2e⁻
Electron shell structure of Berkelium — electrons per shell.
Shell Electrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 27
6 (P) 8
7 (Q) 2

Position in Periodic Table

Berkelium position in the periodic table Bk

Block & Period

Block

s p d f

Period

1 2 3 4 5 6 7

Periodic Table

Lanthanides Actinides

More Actinide

89 Ac Actinium 90 Th Thorium 91 Pa Protactinium 92 U Uranium 93 Np Neptunium 94 Pu Plutonium 95 Am Americium 96 Cm Curium 98 Cf Californium 99 Es Einsteinium

Frequently Asked Questions

What is Berkelium?
Berkelium (Bk) is a chemical element with atomic number 97. It is a solid at standard temperature and pressure, classified as a actinide.
What are the key properties of Berkelium?
Berkelium has an atomic mass of 247.0 u.
What is the electron configuration of Berkelium?
The electron configuration of Berkelium is [Rn] 5f9 7s2. It is in the f-block of the periodic table.
What is the electronegativity of Berkelium?
Berkelium has an electronegativity of 1.3 on the Pauling scale.