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He stated that all matter was made of tiny and unbreakable particles called atoms.
This theory was revise because various scientists have discovered the subatomic particles (J.J. THomson discovered the electron, James Chadwick discovered the neutron etc.). Scientists have also found that atoms can undergo nuclear decay. We also know the structure of an atom is not just a solid ball.
What else can I help you with?
Was Mendeleev's periodic table read horizontally or vertically?
His original 1869 table had the atomic weights increasing down columns, and family members alongside each other in horizontal rows. His revised and greatly improved 1871 version had atomic weights increasing across rows, and element families in vertical columns, essentially similar to the way a modern Periodic Table is presented.
How do you find sodium atomic mass?
The atomic mass of elements are now determined by mass spectrometry and revised by IUPAC (the newest list is from 2005). The atomic mass of sodium is 22, 989 769 280 87 (± 0,000 000 029 3). Rounded - 23. Atomic masses of chemical elements are mentioned in periodic tables or in the list of elements.
Why have scientists revised the a atomic model many times?
they could discover a new atom and it would change
What was originally a tenet of Dalton's atomic theory but had to be revised because of the discovery of nuclear fission?
a. atoms are tiny indivisible particles b. atoms of the same element are identical c. compounds are made by combining atoms d. atoms of different elements can combine with one another in simple whole ratios
What changes were made to the periodic table after Mendeleevs discovery?
it has been revised. also it is not organized anymore by atomic weight... it is organized by atomic number. Glenn Seaborg discovered the transuranic elements, from 94 to 102. one of the biggest changes was the whole new family of the noble gases.firstly the fundamental basis of classification changed from Atomic Mass to atomic number secondly left up gaps were filled up
On what were the original atomic weights based?
The original atomic weights were based on the mass of hydrogen.
What was the original sites of the atomic bomb?
The original sites were Nagusaki and Hiroshima.
Was Mendeleev's periodic table read horizontally or vertically?
His original 1869 table had the atomic weights increasing down columns, and family members alongside each other in horizontal rows. His revised and greatly improved 1871 version had atomic weights increasing across rows, and element families in vertical columns, essentially similar to the way a modern Periodic Table is presented.
How is the original periodic table arranged?
My the Atomic Mass.
where was the desert was the atomic bomb tested in?
The original atomic bomb testing ground was in Almogordo, New Mexico.
Why did the atomic theory change over time?
The atomic theory changed over time as new scientific discoveries and evidence emerged through experimentation. Early atomic theories were revised and refined to better explain the behavior of atoms and their interactions with each other. The development of more advanced experimental techniques also contributed to a better understanding of atomic structure and properties.
Why democritus's original atomic theory was revised?
He stated that all matter was made of tiny and unbreakable particles called atoms. This theory was revise because various scientists have discovered the subatomic particles (J.J. THomson discovered the electron, James Chadwick discovered the neutron etc.). Scientists have also found that atoms can undergo nuclear decay. We also know the structure of an atom is not just a solid ball.
How do you find sodium atomic mass?
The atomic mass of elements are now determined by mass spectrometry and revised by IUPAC (the newest list is from 2005). The atomic mass of sodium is 22, 989 769 280 87 (± 0,000 000 029 3). Rounded - 23. Atomic masses of chemical elements are mentioned in periodic tables or in the list of elements.
Who was a help in the atomic bomb project?
well, the atomic bomb research was done by Robert oppenheimer. the original creation or idea was from albert Einstein
Dimitri Mendeleev made the original peridic table based on what?
Atomic Mass
Does the existence of isotopes contradict part of Dalton's original of atomic theory?
Yes.
When do materials lose their original properties?
Materials lose their original properties when their spatial conditions change, provided their atomic configuration change.
