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Why is cobalt placed before nickel on the periodic table of the elements?
Wiki User
∙ 12y ago
Atomic Mass isn't actually very important in organizing the Periodic Table. It all goes by the atomic number, or, the number of electrons in an element. If you make the choice to learn about orbitals, you'll find the pattern;
1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s25f146d107p6
If you go through all those electron configurations, you'll get the modern periodic table.
We have E1-E116 and E118. E117 was not a reproducible result, and was debunked as an actual discovery. We know E117 is out there, we just don't know how to make it yet.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoCobalt comes first because it has fewer protons (27) and nickel has more (28). The atomic mass is not important in the modern periodic table (but that's all they knew in Mendeleev's day).
The reason cobalt is heavier is because it has more NEUTRONS (32).
Wiki User
∙ 8y agoCobalt is placed before Nickel because Cobalt has less protons than Nickel.
Wiki User
∙ 6y agoNickel has a lower atomic mass than cobalt.
Wiki User
∙ 12y agocobalt has 27 protons, nickel has 28
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Which Elements that are naturally magnetic at room temperature?
nickel, cobalt, iron
Can pure iron can be separated by a magnet?
Cobalt and nickel are also magnetic elements.
Contains elements with similar properties?
Iron Triad (iron,cobalt,nickel)
What are 3 strongly magnetic metals?
I believe there are five magnetic elements: Iron, Nickel, Cobalt, Chromium, and Neodymium. Magnetism is a field of study all its own. The scientific terminology used to measure, describe and study magnetism is beyond the scope of this answer. Some elements are said to be "ferromagnetic" and others are said to be "paramagnetic." Ferromagnetic materials can be used to make permanent magnets. Iron was the first element to be discovered to be magnetic. Some scientists theorize that the earth's core is molten iron, giving the earth a magnetic field. While some elements are not properly "magnetic" in their own right, they can be used in metal alloys to make permanent magnets. One example is the alnico magnet, composed of a metal alloy of aluminum, nickel, cobalt, copper and a bit of iron. One element that is "paramagnetic" -- in other words, it cannot be made into a magnet, but is attracted to magnets -- is oxygen. It is always paramagnetic, even in the air we breathe, but the paramagnetism isn't observed well until oxygen is in a liquid form.
What is the wavelength of nickel and cobalt?
nickel = 232 nm
Does nickel have Cobalt in it?
Nickel and Cobalt are both elements, which means they are pure. Therefore, the do not contain anything else, so Nickel does not have Cobalt in it.
Is colbalt an element mixture or a compound?
Cobalt (Co) is a metal it is an element on the periodic table of the elements it is number is 27 cobalt is a cross between iron (FE) and nickel (NI)
Which elements are magnetic?
cobalt and nickel classically, it's iron AlNiCo (Aluminum, Nickel and cobalt) makes a great magnet.
What are the 3 elements that are magnet?
Iron, Nickel and Cobalt
What elements compose Alnico?
aluminum nickel and cobalt
What elements make a magnet?
aluminum, nickel, and cobalt
What three elements do magnetic materials contain?
Magnetic materials may contain any mixture of certain elements. Three of the most common elements are iron, nickel and cobalt.
What are often used elements in magnets?
Cobalt, iron, gadolinium, nickel, neodimyum
What are the 3 elements that magnetic materials have to have?
Iron,Nickel and Cobalt...
What are some magnetic elements?
Iron, nickel, chromium, manganese and cobalt.
Which Elements that are naturally magnetic at room temperature?
nickel, cobalt, iron
What are the 3 most common elements in magnets?
Iron, Nickel, Cobalt
