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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.
Wiki User
∙ 10y ago
Wiki User
∙ 11y agoclaimed matter is made of atoms
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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.
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
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 do not use the atomic number often when you write the atomic symbol?
Because the atomic symbol implies a corresponding atomic number.
Is the atomic radius the same as the atomic mass?
no atomic radius is not the same as atomic mass because it is 10 to the power of 10 and atomic mass is different for different elements
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.
What was the original sites of the atomic bomb?
The original sites were Nagusaki and Hiroshima.
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 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.
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
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.
Why do not use the atomic number often when you write the atomic symbol?
Because the atomic symbol implies a corresponding atomic number.
Who revised the periodic table?
The Periodic Table of Elements was modified by the English scientist Henry Moseley in the year 1913. Moseley assessed the atomic number of the elements individually and organized the atoms according to increasing atomic number.
