How have chemists use the periodic table over time?

Answer 1

chemist used the Periodic Table to make it easier for them to figure out elements.as there are many valuable information(atomic no. 4 example)they can always have the chart with them and see them when they are doing experiments.taching,etc

Answer 2

chemist used the Periodic Table to make it easier for them to figure out elements.as there are many valuable information(atomic no. 4 example)they can always have the chart with them and see them when they are doing experiments.taching,etc

Answer 3

For the last 140 years the main use of the Periodic Table has been to allow chemists to make really good guesses about the properties of unknown materials, or the unknown properties of well-known materials, and to stimulate and design experiments that might produce interesting results.

The most important application of the Periodic Table in these 140 years can be seen in the following story:

Germanium, Ge, is a rather rare element that was not discovered and characterized until the 1880s, although Mendeleev had used the periodic table to predict its existence and make a very accurate guess at many of its chemical properties in 1871. During the early 1940s several interesting and unusual electrical properties of elemental germanium were investigated, and this led in 1947 to the invention of the germanium transistor. In the 1960s transistor technologies led to the replacement of thermionic valves in various electronic devices. Thermionic valve equipment ran on voltages between about 80 and 400 volt, consumed a lot of power, and generated a lot of heat. The germanium technology that replaced them used voltages from 6 to 40 volt, greatly reduced power consumption, and allowed for more compact equipment.

But chemists continued to look at the periodic table. The element silicon lies just above germanium in the periodic table, and is in the same family of elements. So they investigated whether they could produce similar electrical effects in elemental silicon. There were a few difficulties, but with further investigation, ways around them were discovered, and silicon transistors were introduced.

Now germanium is a rare and somewhat expensive element, while silicon is the second most abundant element available to us (after oxygen). Silicon technology was always going to be cheaper than germanium -- the first step of processing is simply to pick up some sand and heat it to a very high temperature in an electric furnace! It proved, on further investigation, to offer significant advances over the more obvious germanium technology. Further work by chemists and physicists in developing silicon technology has provided the basis for extreme miniaturisation of electronics, and the whole of the remarkable computer and communication revolution that we are experiencing today.

You can thank Mendeleev for it!

Answer 4

For the last 140 years the main use of the Periodic Table has been to allow chemists to make really good guesses about the properties of unknown materials, or the unknown properties of well-known materials, and to stimulate and design experiments that might produce interesting results.

The most important application of the Periodic Table in these 140 years can be seen in the following story:

Germanium, Ge, is a rather rare element that was not discovered and characterized until the 1880s, although Mendeleev had used the periodic table to predict its existence and make a very accurate guess at many of its chemical properties in 1871. During the early 1940s several interesting and unusual electrical properties of elemental germanium were investigated, and this led in 1947 to the invention of the germanium transistor. In the 1960s transistor technologies led to the replacement of thermionic valves in various electronic devices. Thermionic valve equipment ran on voltages between about 80 and 400 volt, consumed a lot of power, and generated a lot of heat. The germanium technology that replaced them used voltages from 6 to 40 volt, greatly reduced power consumption, and allowed for more compact equipment.

But chemists continued to look at the periodic table. The element silicon lies just above germanium in the periodic table, and is in the same family of elements. So they investigated whether they could produce similar electrical effects in elemental silicon. There were a few difficulties, but with further investigation, ways around them were discovered, and silicon transistors were introduced.

Now germanium is a rare and somewhat expensive element, while silicon is the second most abundant element available to us (after oxygen). Silicon technology was always going to be cheaper than germanium -- the first step of processing is simply to pick up some sand and heat it to a very high temperature in an electric furnace! It proved, on further investigation, to offer significant advances over the more obvious germanium technology. Further work by chemists and physicists in developing silicon technology has provided the basis for extreme miniaturisation of electronics, and the whole of the remarkable computer and communication revolution that we are experiencing today.

You can thank Mendeleev for it!

Answer 5

chemist used the periodic table to make it easier for them to figure out elements.as there are many valuable information(atomic no. 4 example)they can always have the chart with them and see them when they are doing experiments.taching,etc

Answer 6

For the last 140 years the main use of the periodic table has been to allow chemists to make really good guesses about the properties of unknown materials, or the unknown properties of well-known materials, and to stimulate and design experiments that might produce interesting results.

The most important application of the periodic table in these 140 years can be seen in the following story:

Germanium, Ge, is a rather rare element that was not discovered and characterized until the 1880s, although Mendeleev had used the periodic table to predict its existence and make a very accurate guess at many of its chemical properties in 1871. During the early 1940s several interesting and unusual electrical properties of elemental germanium were investigated, and this led in 1947 to the invention of the germanium transistor. In the 1960s transistor technologies led to the replacement of thermionic valves in various electronic devices. Thermionic valve equipment ran on voltages between about 80 and 400 volt, consumed a lot of power, and generated a lot of heat. The germanium technology that replaced them used voltages from 6 to 40 volt, greatly reduced power consumption, and allowed for more compact equipment.

But chemists continued to look at the periodic table. The element silicon lies just above germanium in the periodic table, and is in the same family of elements. So they investigated whether they could produce similar electrical effects in elemental silicon. There were a few difficulties, but with further investigation, ways around them were discovered, and silicon transistors were introduced.

Now germanium is a rare and somewhat expensive element, while silicon is the second most abundant element available to us (after oxygen). Silicon technology was always going to be cheaper than germanium -- the first step of processing is simply to pick up some sand and heat it to a very high temperature in an electric furnace! It proved, on further investigation, to offer significant advances over the more obvious germanium technology. Further work by chemists and physicists in developing silicon technology has provided the basis for extreme miniaturisation of electronics, and the whole of the remarkable computer and communication revolution that we are experiencing today.

You can thank Mendeleev for it!

Answer 7

they have added a new element to the table -apex