The rare earth metals are generally located at the bottom of the Periodic Table in the rows named the lanthanide or lanthanoid series and the actinide or actinoid series. They are generally said to end the f sublevel although there is much overlap with the d sublevel so it is very inconsistent.
There are a number of elements on the periodic table listed as Synthetic Elements. They are highly unstable, and thus only exist in laboratory conditions for a short period of time. These would be the ones listed on the bottom of the periodic table with only the Atomic Mass number listed in parenthesis. Some, for example, Technetium was initially synthesized, but later discovered as a very rare naturally occurring substance on earth. See notes on Wikipedia: http://en.wikipedia.org/wiki/Synthetic_element However, one of the rarest of all elements is not actually on the periodic table. Antimatter in the form of Positrons (anti-electrons) and anti-protons (essentially anti-hydrogen) has been synthesized in the laboratory, but it is highly reactive with all "normal matter", and thus can only be maintained for a very short period of time. It is believed that antimatter reactions have been observed in astronomy, but it is unknown whether there exist any antimatter stars, solar systems, and galaxies.
They occupy the whole separated section of the 6th row (Lanthanum through Lutetium).
Alkaline earth metals are rare earth metals. They are placed in group-2.
Sodium is the eleventh element on the periodic table.
No element has an atomic weight of 19.32 on the periodic table.
Krypton is the 36 th element in the periodic table. It is a noble gas belonging to 4th period of the periodic table.
who introduced the first Periodic Table
Not currently on the periodic table anyway
Radium (Ra) # 88th element in the periodic table.
No, I believe not.
The element abbreviated with As on the periodic table is Arsenic
Sodium is the eleventh element on the periodic table.
A group in Periodic Table is the column of element in periodic table
Copper is on the Periodic Table, anything on the periodic table is an element so copper wire is made from an element.
Darmstadtium is the element 110 in the periodic table.
No, hydrogen is ?the lightest element in the periodic table.
H or Hydrogen is an element. If it's on a periodic table then it's an element
The element potassium is represented by the abbreviation K in the periodic table.
Berkelium is on the periodic table. If it's on the periodic table, it's an element.
No element has an atomic weight of 19.32 on the periodic table.