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Actinides or actinoids are the elements in the Periodic Table having general electronic configuration of 5f 0-146d0-17s2. they are also called 5f- series. the atomic numbers are:
90 - Thorium (Th)
91 - Protactinium (Pa)
92 - Uranium (U)
93 - Neptunium (Np)
94 - Plutonium (Pu)
95 - Americium (Am)
96 - Curium ( Cm)
97 - Berkelium (Bk)
98 - Californium (Cf)
99 - Einsteinium (Es)
100 - Fermium (Fm)
101 - Mendelevium ( Md)
102 - Nobelium ( No)
103 - Lawrencium (Lr)
What else can I help you with?
How many columns of elements does the periodic table have?
The periodic table contains seven rows of elements. The lanthanide series belongs to row six as elements 57-71. The actinide series belongs to row seven as elements 89-103.
How many elements are there in the actinoid series?
There are 15 elements in the actinoid series, also known as the actinides. These elements follow actinium in the periodic table and include elements such as thorium, uranium, and plutonium.
Which lanthanide element and which transition element have only radioactive isotopes?
All or almost all elements have radioactive isotopes if artificial isotopes are included. Among the naturally occurring elements, uranium, polonium, radium, and thorium have naturally occurring radioactive isotopes on earth.
How many different elements make up H3PO4?
3
How many elements make up beryllium sulfite?
Beryllium sulfite is composed of three elements: beryllium, sulfur, and oxygen.
How many elments are in the lanthanide series?
15
How many rows are on the periodic table?
The periodic table contains seven rows of elements. The lanthanide series belongs to row six as elements 57-71. The actinide series belongs to row seven as elements 89-103.
How many elements are in the lanthanide series?
There are a total of 15 elements in the lanthanide series, which are elements 57 to 71 (excluding the transitional element lanthanum), as well as elements 89 to 103, which are actinides and considered part of the broader actinide series.
How many columns of elements does the periodic table have?
The periodic table contains seven rows of elements. The lanthanide series belongs to row six as elements 57-71. The actinide series belongs to row seven as elements 89-103.
How many groups of elements we're formed?
5 groups of elements
Elements 58 though 71 and 90 through 103 are called?
58 through 71 are lanthanides, 90 through 103 are actinides.
How many electrons does rare earth metals have?
Rare earth metals have a varying number of electrons, as it depends on the specific element within the group. The rare earth metals are a group of elements in the lanthanide series of the periodic table. They typically have between 57 to 71 electrons based on their atomic number.
How many electrons would the above atom have in the outer electron shell?
Somewhere between 1 & 8 (unless ionised - could have 0). Which atom are we talking about here? Rule of thumb (not including Lanthanide & Actanide series) - Find which column it is in on the periodic table of elements and that's how many electrons it will have in it's (non-ionised) state.
How many elements are there in the actinoid series?
There are 15 elements in the actinoid series, also known as the actinides. These elements follow actinium in the periodic table and include elements such as thorium, uranium, and plutonium.
Which lanthanide element and which transition element have only radioactive isotopes?
All or almost all elements have radioactive isotopes if artificial isotopes are included. Among the naturally occurring elements, uranium, polonium, radium, and thorium have naturally occurring radioactive isotopes on earth.
How many different elements appear in the uranium-238 decay series?
20 isotopes
How many elements make landforms?
88 different elements exist in nature.
