as a consequence of actinide contraction the radius of the metal atom decreases as the 5f electrons of the actinides are poorly shielded. (Due to this poor shielding it is more strongly attracted by the nuclear charge resulting in decreased radius)
Actinide is not an element, but is a series of elements. Of the actinide series of elements, all except actinium, thorium, protactinium, and uranium are considered to be synthetic elements because they are not found in nature in appreciable amounts.
f block element
Californium (Cf) is an element in the actinide series who's most common use is in gold and silver prospecting.
This is the actinoid family.
Hydrogen is a none metal element. atomic number of it is 1.
Plutonium is an actinide
Actinide
Th, element 90, spelled thorium, is an actinide and has been used as a nuclear fuel (see Wikipedia.)
Actinide is not an element, but is a series of elements. Of the actinide series of elements, all except actinium, thorium, protactinium, and uranium are considered to be synthetic elements because they are not found in nature in appreciable amounts.
The lanthanide and actinide series. Trait of lanthanide: Lanthanum, element 57. Trait of actinide: actinium, element 89.
The lanthanide and actinide series. Trait of lanthanide: Lanthanum, element 57. Trait of actinide: actinium, element 89.
Uranium
URANIUM (:
The element that is an actinide and named for the creator of the periodic table is Mendelevium (Md). Mendelevium has atomic number 101 and is named after Dmitri Ivanovich Mendeleev.
The atomic number of thorium, Th, is 90 and it is an inner transition element in the Actinide series. The Actinide series is the second of the two series shown by themselves. It starts Actinium, Thorium, Protactinium, and Uranium, so Thorium is the second element in the Actinide series.
The lanthanide and actinide series. Trait of lanthanide: Lanthanum, element 57. Trait of actinide: actinium, element 89.
Uranium (part of the actinide series of the periodic table)