Tenzin Dorji said good effective teachers have made their students learn the basic atomic weights
because it was important for the students to learn and know and not because it was coming in the examinations.
It was then found that the vast majority of atomic weights
of the polynuclidic elements could be reproduced through continued fractions as well.
In this way, inaccuracies due to uncertainties in the atomic weights
of the elements are largely eliminated, since the latter are likely to be the same in all proteins in a given sample.
New features in the 2004 edition include 1,200 updated chemical structures; 978 modified entries; 112 new generic drug names (with 54 new USAN listings); and approximately 734 recomputed molecular weights based on the latest atomic weights
IUPAC Commission on Atomic Weights
and Isotopic Abundances, Pure Appl.
Elements placed according to the value of their atomic weights
present a clear periodicity of properties.
New Columbia Encyclopedia, at atomic weights
Until such time as more was known about molecular makeup, the values obtained for atomic weights
would be dubious.
Richards was honored for his work in determining the exact atomic weights
of a number of elements, in some cases correcting erroneous measurements.
The standard atomic weights
, including the proton and electron reference masses were taken from the web-site of the National Institute of Standards (NIST) and were expressed in the atomic mass unit u.
Isotopes are variants of the same element with different atomic weights
This results in those rare earths with lower atomic numbers and atomic weights
actually having larger atoms than elements that are higher in the periodic table.
He calculated relative atomic weights
by weighing the amounts of various chemicals that combined to make new chemicals, making assumptions about how many atoms of one element combined with an atom of another.
This machine knows the atomic weights
of millions of microscopic particles and can recognise each one.
Prout's name is associated with the two hypotheses of integral atomic weights
and the unity of matter, i.