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| Known properties | |||||
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| Name, Symbol, Number | lawrencium, Lr, 103 | ||||
| Chemical series | Transition metals | ||||
| Group, Period, Block | 3, 7 , d | ||||
| AppearanceFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of | unknown; probably metallic, silvery white or gray | ||||
| Atomic weightIn reference to a certain isotope of a chemical element, atomic weight (more accurately relative atomic mass though also called simply atomic mass is the mass of one atom of the isotope expressed in units atomic mass unit amu) such that the Carbon-12 isot | 1 E-25 kg| | ||||
| Electron configurationElectron configuration is the arrangement of electrons in an atom, molecule or other body. Specifically, it is the placement of electrons into atomic, molecular, or other forms of electron orbitals. Orbitals, states, and wavefunctions Since electrons are | probably | ||||
| e-The electron (also called negatron commonly represented as e&minus is a subatomic particle. In an atom the electrons surround the nucleus of protons and neutrons in an electron configuration. Electrons have the smallest electrical charge and when they mov 's per energy level | 2, 8, 18, 32, 32, 9, 2 | ||||
| State of matter | presumably a solid | ||||
Lawrencium is a synthetic element in the periodic table that has the symbol Lr and atomic number 103. A short-lived radioactive transuranic rare earth element, lawrencium is synthesized from californium and has no known uses.
The appearance of this element is unknown, however it is most likely silvery-white or gray and metallic. If sufficient amounts of lawrencium were produced, it would pose a radiation hazard. Very little is known about the chemical properties of this element but some preliminary work on a few atoms has indicated that it behaves similarly to the actinides.
Lawrencium was, and often still is, grouped with the actinide chemical series in the periodic table. However, unlike all other rare earths, element 103 is a d-block element and therefore is increasingly being placed with the other d-block elements in the transition metal chemical series.