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.
In mendeleev's periodic table , the problem arised for placing isotopes in the table which were eliminated in modern periodic table .
Mendeleev also changed the position for few elements in order to fix the chemical properties which was also eliminated in modern periodic table.
Modern periodic table is invented by Henry Moseley.
Yes.The modern periodic table is organized by atomic number. The elements properties are found to be periodic.
No. When the elements are arranged in order of increasing atomic number there is a periodic repetition of their physical and chemical properties.
The modern periodic law states that, The properties of the elements are the periodic function of there atomic number not atomic weights.
Periodic table of elements.
Dmitri Mendeleev was a Russian chemist; he proposed the modern Periodic Table of elements in 1869.
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.
modern periodic law
Modern periodic table is based on modern periodic law which states that physical and chemical properties of elemnts are periodic function of their atomic numbers.
There are 7 periods in the modern periodic table.
Modern periodic table is invented by Henry Moseley.
The modern periodic table has seven periods.
Dmitri Mendeleev developed the modern periodic table in 1869.
The modern long form of periodic table was constructed by Neils Bohr based on modern periodic law proposed by Moseley.
Yes.The modern Periodic Table is organized by atomic number. The elements properties are found to be periodic.
Yes.The modern periodic table is organized by atomic number. The elements properties are found to be periodic.
No. When the elements are arranged in order of increasing atomic number there is a periodic repetition of their physical and chemical properties.