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Why in the periodic table are elements 57-71 and 89-103 under the table instead of inside the table itself?
Wiki User
∙ 12y ago
In a true Periodic Table, those two series would actually be inserted between Ba and Lu and between Ra and Lr. These elements have separate properties than others in the periodic table, and adding them directly in their place (instead of just separating them) would disrupt the classical group numbering system, make the periodic table ridiculously long, and just plain make it even harder to understand.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoThe periodic elements 57-71 and 89-103 are under the table instead of inside the table itself because they do not occur naturally on earth. They are man made; they are lab created.
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What elements are in gold?
Gold is an element itself, with the symbol Au on the periodic table of elements.
What chemical family is iron part of?
Iron is an element on the periodic table of elements. This means that iron is not made up by other atoms, but is a kind of atom itself.
Why do suppose that the word periodic is used to describe the periodic table?
Because the table repeats itself according to similar chemical properties (i.e. those elements with 5 valence electrons all behave similarly to each other, thus they are in the same column), the properties of the elements periodically repeat themselves as the number of valence electrons (those in the s and p shells) reach 8 and a new valence shell begins.
Why isn't salt on the periodic table?
Air is a mixture of several gaseous elements, such as oxygen and nitrogen, and compounds, such as carbon dioxide. In the sense of the four elements, water, fire, earth, and air, air is an element.
Which element is more electronegative fluorine or oxygen?
Fluorine is the most electronegative element in the periodic table of elements. Electronegativity is a measure of the tendency of an atom or functional group to attract electrons towards itself.
What elements are in gold?
Gold is an element itself, with the symbol Au on the periodic table of elements.
What are the elements of aluminum?
Aluminium itself is an element. (Periodic table --> Al)
Is deuterium on the periodic table of elements?
No. Deuterium is not an element in and of itself. It is an isotope of hydrogen.
What 3 elements make up chlorine?
Chlorine itself is an element. It is on the Periodic Table (of the Elements). It is made from protons, electrons and neutrons.
What elements make up led?
Lead (Pb, #82 on the periodic chart) is an element in itself. Elements, which are pure substances, cannot be broken down into further chemicals. Therefore, there are no chemical elements that make up lead other than Pb, itself.
What chemical elements make up led?
Lead (Pb, #82 on the periodic chart) is an element in itself. Elements, which are pure substances, cannot be broken down into further chemicals. Therefore, there are no chemical elements that make up lead other than Pb, itself.
Which element has more protons in the nucleus of sodium?
Sodium is an element itself, it has no elements inside.
How do you identify What is gas on the periodic table?
The periodic table itself will not tell you if an element is a gas or not. All elements have a melting point and a boiling point. For this information you need to look at a table of the PROPERTIES of the elements. However, all the elements in column 18 and many of the elements towards the top of column 17 and to some extent 16 are gasses at room temperature, as are all the elements in row 1.
The first element on the periodic table table of elements is helium?
No, the first element on the Periodic Table is Hydrogen, but because of its unusual behaviour it is usually placed by itself, not next to any other elements. The second element is Helium.
What is meant by the periodicity of the periodic table?
Periodic means repeating. When Mendeleev was rearranging the elements, he noticed that some of their properties matched with one another about every eight elements. Thus, when the elements are arranged in the rows of the periodic table, they also have matching properties in each column.
What atom because of its ability to combine in many ways with itself and other elements has a central role in the chemistry of living organisms?
Carbon, or C on the periodic table.
What are some foods that are elements?
No elements are foods by themselves. Have a look at a periodic table and you'll find you can't eat hydrogen, helium, lithium, berylliam, boron, carbon, etc etc etc by itself. The closest you can come is to eat a compound of two elements, NaCl, which is table salt.
