What are Rare Elements on Earths

In Japan, it is known as "the seeds of technology." The US Department of Energy calls them "technology metals."

They make the cutting-edge world we live in today – everything from the scaling down of hardware to the empowering of efficient power energy and clinical innovations to supporting a heap of fundamental broadcast communications and protection systems.

They are the elements that have gotten indispensable to our universe of technology, inferable from their special magnetic, glowing, and catalytic properties. 

Which Elements are called Rare elements of Earth? 

Rare earth elements are a bunch of seventeen compound elements in the intermittent table, explicitly the fifteen lanthanides in addition to scandium and yttrium.

Scandium and yttrium are viewed as rare earth elements since they will, in general, happen in similar metal deposits as the lanthanides and display comparable synthetic properties.

While named rare earth, they are not so rare and generally bountiful in the Earth's crust. What is uncommon is to discover them in amounts adequately huge to help financial mineral turn of events.  

Rare Earth Elements 

Rare earth elements (REEs) address the gathering of 17 elements containing 15 lanthanides, in addition to yttrium (Y) and scandium (Sc) (Table 1).

Among the REEs, yttrium was found first in 1794 by a Finish scientist, Johan Gadolin, who separated an oxide and called it "yttria," in a mineral gathered from a quarry in the town of Ytterby in Sweden. This combination of a few oxides of rare earth, including yttrium oxide.

The principal individual REE to be segregated was cerium (Jöns Jacob Berzelius and Wilhelm Hassinger, 1803).

Most other REEs were detached separately in the nineteenth century, and the last normally happening one—Lu—was confined in 1907. It took more than a long time, from the first REE to the last revelation of promethium in 1947.

Since promethium is a radioactive element framed from rots of flimsy isotopes of europium and uranium, with the longest half-existence of 17.7 years for 145Pm, the element is not present in the Earth's crust in distinguishable fixations.

The 5 Rarest Elements on Earth

 In chemistry, you must have experimented with different elements, which are common and easily available in every household. Experimenting with these items in the laboratory is, of course, an exciting part of chemistry. Now, conduct your experiments with some rare elements in the periodic table and find out their nature.
Astatine

Atomic number: 85
Family: Halogens
Group: 17
Period: 6
Melting point: 302 C
Boiling point: 337 C
Discovered in: 1940 by Dale R. Corson, Kenneth R. Mackenzie, and Emllo Segre at the University of California

Oganesson

Symbol: Og
Atomic number: 118
Atomic mass: 294 u
Discovered: 2006
Period: period 7
Discoverers: Yuri Oganessian, Joint Institute for Nuclear Research
 

Berkelium

Symbol: Bk
Electron configuration: [Rn] 5f97s2
Atomic number: 97
Atomic mass: 247 u
Discovered: 1949
Discoverers: Glenn T. Seaborg, Albert Ghiorso 

Francium

Symbol: Fr
Electron configuration: [Rn] 7s1
Atomic number: 87
Van der Waals radius: 348 pm
Atomic mass: 223 u
Electronegativity: 0.79
 

Protactinium

Symbol: Pa
Electron configuration: [Rn] 5f26d17s2
Atomic number: 91
Atomic mass: 231.03588 u
Discovered: 1913
Atomic radius: empirical: 163 pm