0
Henry Moseley showed that atomic number is more fundamental property of an element than its Atomic Mass. It formed the base of modern Periodic Table.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
How is the modern periodic table different from the first periodic table?
when the periodic table was first made, it only had the basic elements eg. hydrogen, oxygen, etc. Now with scientist finding more elements and creating them eg. americum, einstienium or europium, there are more elements than ever before. An element only has to exist for 2 seconds before they put it on the periodic table.
How many groups are in a periodic table?
the same amount as the elements as the elements are made up of only one type of atom so there are 127
Is fire in the periodic table?
fire is made up of elements so technically it is not in the periodic table.
What is the difference between the new and old periodic table?
Well, Back when Medeleev made this table, many of the elements were not even discovered yet. He plotted only the elements that he knew on his table. He organized them by increasing atomic weight. He didn't know all the elements so he would put question marks and empty spaces in the spots he thought elements would be and left to be found by other scientist. He happened to be true about the missing elements and that scientist did end up finding these "missing links" of the periodic table and led to the new or modern periodic table. The modern periodic table doesnt have any missing elements and they changed Medeleev's way of organizing the table by increasing atomic weight to increasing atomic number. So the newer form of the periodic table was complete and made it easier to find what elements react better with other elements. This making the modern table became the more efficent table of our time.
Who put the periodic table in order?
It took many years to discover these elements. Hundreds of thousands worked and arranged the Periodic Table of Elements.The basic design of the periodic table was thought up by Dmitri Mendeleev. It was his idea to arrange the elements according to atomic mass (because this gave repeating patterns of properties). Later it was discovered that atomic charge was what was really important. Eventually the gaps Mendeleev left were filled in by the discovery of more elements, so while many scientist contributed to the modern periodic table Mendeleev is considered to have invented it.
Why does periodic table needs to be develop?
so that it will be acceptable in modern lives of the people in the world
How many elements are in included in the modern periodic table?
112 elements are known, with the existence of addition 6 elements being tentatively proposed.
How did Dmitri Mendeleev discover the periodic table with noble gases?
When Mendeleev proposed his periodic table, the noble gases had not been discovered, so they did not play a part in his development of the periodic table.
Why is the periodic table said to be periodic?
The name comes from the "periodic" (regularly arranged) traits of the material elements. The name given to the table's horizontal rows is periods.The Periodic Table is a tabular arrangement of the elements in increasing order oftheir atomic numbers, so that elements with similar properties are in the same column. There are 18 columns, called groups, and seven rows, which are called periods, in the modern periodic table.
How could modern periodic law remove various anomalies of mendeleevs periodic table?
1.) The atomic mass in Mendeleev's periodic table does not increase regularly. therefore, it was impossible to predict the number of elements between two elements.The Modern periodic table has been made according to the increasing atomic number (Modern Periodic Law states that 'The properties of an element are the periodic function of its atomic number). The atomic number gives us the number of protons in the nucleus of an atom. the atomic number increases by one as we go from one element to the next. thus, this makes it easy to ascertain how many undiscovered elements may be there between two known elements.2.) Mendeleev's periodic table was made according to increasing atomic masses. we know that of an element have same chemical properties and atomic number, but different atomic masses. So, the concept of isotopes can not be satisfied.The Modern periodic table is according to increasing atomic numbers. Therefore, the problem of isotopes is easily dealt with.
How is the modern periodic table different from the first periodic table?
when the periodic table was first made, it only had the basic elements eg. hydrogen, oxygen, etc. Now with scientist finding more elements and creating them eg. americum, einstienium or europium, there are more elements than ever before. An element only has to exist for 2 seconds before they put it on the periodic table.
How many groups are in a periodic table?
the same amount as the elements as the elements are made up of only one type of atom so there are 127
What group of the periodic table is oven cleaner from?
oven cleaner is not an element so it is not in the periodic table
Is fire in the periodic table?
fire is made up of elements so technically it is not in the periodic table.
Is copper wiring a mixture compound or element?
Copper is on the Periodic Table, anything on the periodic table is an element so copper wire is made from an element.
Why is the table of elements named the periodic table?
The periodic table is named so because the elements are aligned in 'periods'. But it probably works the other way round. The Periodic Table has that name because it arises from Mendeleev's formulation of the Periodic Law, which he stated as "When the elements are arranged in order of increasing atomic weight, their chemical properties recur as a periodic function". The modern Periodic Law is the same except that "atomic weight" has been replaced with "atomic number".
Is cottage cheese on the periodic table?
No, cottage cheese is not on the periodic table. But I did laugh when I saw that, so thank you
