Periodic table why is it important

It is an Alkali Metal and is located in Group 1 of the periodic table. Xenon Xe exists as a colourless, odourless gas and is chemically inert.

It has the atomic number 54 in the periodic table and belongs in Group 18, the Noble Gases. It is a non metal with the symbol Xe. Iodine I is a purple grey solid non metal.

It has the atomic number 53 in the periodic table. It is located in Group 17, the Halogens. It has the symbol I. Tellurium Te is a silver-white semi metal that has the atomic number 52 in the periodic table. It is located in Group 16 of the periodic table. It has the symbol Te.

Antimony Sb is a hard brittle silver-white semi metal that has the atomic number 51 in the periodic table. It is located in Group 15 of the periodic table. It has the symbol Sb. Tin Sn is a silver-white metal that has the atomic number 50 in the periodic table.

It is located in Group 14 of the periodic table. It has the symbol Sn. Indium In is a silver-white metal that has the atomic number 49 in the periodic table. It is located in Group 13 of the periodic table. It has the symbol In. Cadmium Cd is a blue-white metal that has the atomic number 48 in the periodic table. It is a Transition metal and located in Group 12 of the periodic table.

It has the symbol Cd. Silver Ag is a silver metal that has the atomic number 47 in the periodic table. It is a Transition metal and located in Group 11 of the periodic table.

It has the symbol Ag. Palladium Pd is a silver-white metal that has the atomic number 46 in the periodic table.

It is a Transition metal and located in Group 10 of the periodic table. It has the symbol Pd. Rhodium Rh is a brittle silver-white metal that has the atomic number 45 in the periodic table.

It is a Transition metal and located in Group 9 of the periodic table. It has the symbol Rh. Ruthenium Ru is a brittle silver-gray metal that has the atomic number 44 in the periodic table. It is a Transition metal and located in Group 8 of the periodic table. It has the symbol Ru.

Technetium Tc is a silvery-gray metal that has the atomic number 43 in the periodic table. It is a Transition metal and located in Group 7 of the periodic table.

It has the symbol Tc. Molybdenum Mo is a silvery-white metal that has the atomic number 42 in the periodic table. It is a Transition metal and located in Group 6 of the periodic table. It has the symbol Mb. Niobium Nb is a shiny white metal that has the atomic number 41 in the periodic table.

It is a Transition metal and located in Group 5 of the periodic table. It has the symbol Nb. Zirconium Zr is a gray white metal that has the atomic number 40 in the periodic table. It is a Transition metal and located in Group 4 of the periodic table. It has the symbol Zr. Yttrium Y is a silvery metal that has the atomic number 39 in the periodic table.

It is a Transition metal and located in Group 3 of the periodic table. It has the symbol Y. The periodic table is the collection of elements arranged by atomic number. Dmitri Mendeleev was a Russian scientist who in proposed the first structure of the periodic table. Elements are atoms with the same number of protons in the nucleus. Table of Contents. Atomic Structure. Element Names and Symbols. Elements in Everyday Life. Groups and Periods. Metals and Non Metals.

Elements, Compounds and Mixtures. States of Matter. State Changes. Physical Properties. Chemical Properties. Atomic Number. Atomic Mass. Why is it Important? Who Uses It? Why Gaps? All Elements Abundant? Elements Made in Lab? Feb 28 Oct 21 The periodic table has come a long way since Russian chemist Dmitri Mendeleev first drew up the original sketches in While plenty has changed over the past years, including the addition of new elements such as Nihonium Nh , Moscovium Mc , Tennessine Ts and Oganesson Og in , the underlying concept of the periodic table retains its relevance and importance.

Mendeleev designed the periodic table as a way of systematically categorising elements according to atomic number, electron configuration and recurring chemical properties. This allows for the identification of elemental characteristics simply by analysing its position on the table. In fact, the periodic table is so accurate that it allows scientists to predict the chemical and physical properties of elements that hadn't yet been discovered. In laboratories, the periodic table plays an important role in helping scientists anticipate the types of chemical reactions that could occur and balance equations accordingly.

This is done by analysing characteristics such as reactivity, pliability and the capacity to conduct electricity and likelihood of combining with non-metals. Elements aligned in the same column share similar properties and are known as groups. Elements that share the same row are known as periods and have the same highest unexcited electron energy levels. For instance, all the group 18 elements are inert gases. The periodic table contains an enormous amount of important information.

People familiar with how the table is put together can quickly determine a significant amount of information about an element. Jump to: home search phonebook banner navigation site navigation main content footer navigation. Hariya at the Mineralogical Museum in Moscow have looked at the periodic table from another angle in their attempts to make it more predictive and more precise.

They classified all the elements according to a number they calculated by dividing the ionisation energy of each atom by the size of the singly charged, positive ion. They found that they could use this ratio to classify all the elements into 13 groups.

Compounds within each group have a distinctive crystal chemistry and form particular types of compounds. Some of these groups are identical to the vertical columns of the classic periodic table. But they also identified some new groupings, such as zirconium, niobium, hafnium and tantalum, which are all particularly good at forming complexes. Whatever the outcome of the debate over how to extend the periodic table of the elements, several chemists have now begun to construct and use periodic tables, not of elements, but of compounds and molecules.

In fact, this idea is not new. As long ago as , the English chemist John Newlands, proposed a periodic table for organic molecules. Even Mendeleyev made heavy use of the behaviour of metal oxides and other compounds in deciding where to place particular elements in his table.

As long ago as the late s, Hefferlin put forward a complete periodic system for all diatomic molecules, which divides up into 15 three-dimensional blocks. One dimension of each block is obtained by adding up the row numbers in the periodic table of the constituent atoms and the other two come from the column numbers of the two individual atoms see Figure 3.

For this they needed a total of 25 blocks to accommodate the different combinations of atoms. It is now possible to infer many of the properties of diatomic and triatomic compounds from these periodic systems. The Chinese scientist Fanao Kong of the Hefei University of Technology in China has even put forward a system for tetra-atomic molecules.

The two sets of numbers are used to make a grid whose columns reveal, for example, how metallic character varies. Chemical periodic tables are usually smaller than these rather grandiose structures. Early this year, Bruce King of the University of Georgia devised a table for neutral osmium carbonyl clusters in which carbon monoxide molecules attach themselves to triangles of osmium atoms.