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On what were the original atomic weights based?
The original atomic weights were based on the mass of hydrogen.
What is the fraction in calculating the average atomic weight of an element?
The fraction represents the abundance of each isotope of the element. It is calculated by multiplying the fractional abundance of each isotope by its atomic mass, then summing these products to obtain the average atomic weight.
Why are atomic weights realitive weights?
Actually weights are too small and are hard to work with.
The atomic weight of Br is the of the atomic weights of Cl and l?
The atomic weight of Br (Bromine) is the sum of the atomic weights of Cl (Chlorine) and I (Iodine). This is because bromine falls between chlorine and iodine in the periodic table, thus its atomic weight is approximately the average of the atomic weights of chlorine and iodine.
Base weight a system of comparing atomic weights to carbon is it true or false?
True. The unit for the atomic weights of chemical elements is the relative atomic mass unit (1/12 from the atomic mass of the isotope 12C). Note that atomic weights is used for elements and atomic mass for isotopes.
Who was the first scientist to determine atomic weights for elements?
The first scientist to determine atomic weights for elements was John Dalton, an English chemist and physicist.
What is often used in place of atomic weights?
Relative atomic masses are often used in place of atomic weights. They represent the weighted average of the masses of the isotopes of an element relative to the mass of a carbon-12 atom.
What are the atomic weights of two isotopes of the element number?
both the atomic number and the atomic mass remain the same
Total number of protons and neutrons in the atom is?
The total number of neutrons in an atom is known as its atomic mass. The sum of all the atomic weights of isotopes of a particular element is known as an element's atomic weight. Atomic weights are decimal numbers for this reason.
What is the mass of a mole of NaCl measured by?
The mass of one mole of NaCl is the sum of the atomic weights for sodium and chlorine in grams. The atomic weights are found on the periodic table.
What has the author Edward Vogel written?
Edward Vogel has written: 'The atomic weights are, under atmospheric pressure, not identical with the specific gravities' -- subject(s): Atomic weights
Are atons of an element having the same atomic no but different atomic weights?
Yes, and they are called isotopes.
