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How can the atomic mass of the element be lower than the element that came before it?
Wiki User
∙ 15y ago
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.
Wiki User
∙ 15y ago
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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(
Which chemical element came from space?
All of them
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.
What scientists came up with the first widely recognized atomic theory?
John Dalton
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.
How does Dalton's model of the atomic theory agree with models that came before it?
Excepting philosophical atomism John Dalton is the first to elaborate an atomic theory.
Who came up with this quote all atoms of a given element are identical but they differ from those of any other element?
Dalton came up with that theory. It was proven wrong, though.
What came first hydrogen or promethium?
Hydrogen as the atomic number 1 and promethium has the atomic number 61.
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?
Which chemical element came from space?
All of them
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.
