Nickels are called nickels because they are made from the element nickel.
Not exactly. Nickels are only 25% nickel. The rest is copper.
At one time the US issued 5¢ coins in both silver alloy and copper-nickel. There were also silver and copper-nickel 3¢ coins that were used for buying postage stamps, among other things.
To distinguish them people used terms like "3 cents silver" and "3 cents nickel". The 3-cent denomination was discontinued due to its limited usefulness, but the terms stuck around for 5-cent coins. Silver 5-cent pieces were discontinued about the same time, and the term morphed to "5-cent nickels" and eventually, just "nickels"
Nickel can be separated from materials it is found with through a process called leaching, where the ore is treated with chemicals to dissolve the nickel. The resulting nickel solution can then be purified through processes like solvent extraction or precipitation to isolate the nickel metal.
Nickel is a metal and has 28 electrons when not ionized.
The compound name for NiCl2 is Nickel Chloride. It is comprised of one atom of Ni, Nickel, and two atoms of Chlorine which becomes a Chloride.
The compound NiC2H3O2 is called nickel acetate. It is a chemical compound with the formula Ni(CH3COO)2.
As a coin? A five cent piece or five cents. As an element? It is just called "Nickel", unless you are thinking of an alloy of copper and nickel known as "German silver".
Although the nickel is actually 75% copper, it is called a nickel because of the 25% nickel it contains.
cupro-nickel is the term referring to copper / nickel alloys. The particular alloy used in electrical resistors has 45% nickel, and is called constantan. See related link.
It is composed of an iron and nickel alloy, and is called the inner core.
The compound NiSe is called nickel selenide. It is a binary compound composed of nickel (Ni) and selenium (Se).
The last year of minting for the 'Indian Head' nickel (some times called the 'Buffalo' nickel) was 1938.
There isn't necessarily a Hindi equivalent of a nickel in the Hindi language. Perhaps there may be a monetary value associated with the language that may be similar, but a direct translation doesn't exist.
A quarter is actually made up of two elements, nickel and copper. This is not a compound, it is a mixture (mixtures of metals are called alloys).
is it a nickel
This coin is commonly called the Liberty Nickel, it is made of copper-Nickel, and became to be called the "V" Nickel
There is no such thing as a 1906 Indian head nickel(*). The first nickel with that design was issued in 1913. The previous design is called a Liberty nickel; you can find a list of prices at the attached link.
This coin is commonly called either a buffalo nickel or an Indian head nickel but not a "buffalo head nickel" - after all, it shows the whole buffalo! Please see the question "What is the value of a 1927 US nickel?" for more information.
Nickel can be separated from materials it is found with through a process called leaching, where the ore is treated with chemicals to dissolve the nickel. The resulting nickel solution can then be purified through processes like solvent extraction or precipitation to isolate the nickel metal.