0
How can the atomic mass of the element be lower than the element that came before it?
Because the Periodic Table is organized by atomic number, not by Atomic Mass. The general trend in the periodic table is a higher atomic mass as you go up atomic number, but there are exceptions.
What else can I help you with?
What is Atomic mass of air?
Do the atomic mass of each element/ compound which makes up air divided by 100 and then times by the percentage that the element exists in air. This should give you the mass that each element/ compound contributes to the atomic mass of air. Add them all together to get the overall atomic mass of air. (I calculated this and it came out at 25.6 3sf )
What does the isotope of an element have?
An isotope of an element has a different number of Neutrons to the original element it came from. EG: Carbon( 11 neurtons) can go to carbon(12 Neutrons(
Did the periodic table come before the atomic model?
The periodic table came after the atomic model. The modern periodic table was developed based on the atomic structure proposed by scientists such as John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr. Mendeleev's periodic table was published in 1869, while the atomic model continued to evolve throughout the late 19th and early 20th centuries.
What came first the periodic law or the periodic table?
The periodic law came first. Mendeleev enunciated this law as "when the elements are arranged in order of increasing atomic weight, there is a periodic repetition of their chemical properties". He proceeded to construct a table based around this law. In constructing the periodic table Mendeleev used remarkable chemical insight, changing the atomic weights of several elements, atomic weight and valence of a few, and leaving a few spaces where there seemed to be room for an undiscovered element in the table -- he was able to predict the chemical properties of these then undiscovered elements with amazing accuracy.
Who came first Democritus or Aristotle?
Democritus came before Aristotle. Democritus (c. 460-370 BC) was an ancient Greek philosopher known for his formulation of atomic theory. Aristotle (384-322 BC) was a student of Plato who went on to become a renowned philosopher in his own right, but he came after Democritus in terms of historical chronology.
What came first hydrogen or promethium?
Hydrogen as the atomic number 1 and promethium has the atomic number 61.
What element is with the same name as fictional planet from which superman came?
krypton , KR atomic number 36
What is Atomic mass of air?
Do the atomic mass of each element/ compound which makes up air divided by 100 and then times by the percentage that the element exists in air. This should give you the mass that each element/ compound contributes to the atomic mass of air. Add them all together to get the overall atomic mass of air. (I calculated this and it came out at 25.6 3sf )
What does the isotope of an element have?
An isotope of an element has a different number of Neutrons to the original element it came from. EG: Carbon( 11 neurtons) can go to carbon(12 Neutrons(
Who came first Hitler or the atomic bomb?
Hitler, he was dead before the Bomb was used in warfare.
Who came up with this quote all atoms of a given element are identical but they differ from those of any other element?
This quote is attributed to British physicist and chemist John Dalton, who proposed the atomic theory of matter in the early 19th century. Dalton's theory stated that all atoms of a given element are identical and have specific characteristics that differentiate them from atoms of other elements.
How did the atomic bombs differ from bombs that had been used in wartime before?
Their energy came from that stored in matter (E=MC2) rahter than that stored in chemical bonds.
He came out with the Plum-Pudding atomic model?
john dalton?
What came before triassic or Jurassic?
Triassic came before
i have one wisdom tooth on lower right side that came in after all my other teeth were pulled do i need to have it removed befor i have my other dentuers made?
"i have a wisdom tooth on lower right side that came in after all my other teeth were removed do i need to have it removed before i get a set of dentures
What element does sulfate originate from?
it came from the element called sulfur and then combined with oxygen which results in sulfate.
Who was democritus?
democritus was greek philosophers.
