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De Atoomtheorie
The earliest recorded discussion of the basic structure of matter comes from ancient Greek philosophers. Leucippus and Democritus argued that all…
Subatomaire Deeltjes
Dalton was only partially correct about the particles that make up matter. All matter is composed of atoms, and atoms are composed of three smaller…
Elementen: Chemische Symbolen en Isotopen
A chemical symbol is an abbreviation used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. The same symbol…
Ionen en Ionische Ladingen
In ordinary chemical reactions, the nucleus — which contains the protons and neutrons of each atom and thus identifies the element —…
Het Periodieke Systeem
As early chemists discovered more elements, they realized that various elements could be grouped by their similar chemical behaviors. One such…
Atoommassa
Atoms — and the protons, neutrons, and electrons that compose them — are extremely small. For example, a carbon atom weighs less than 2…
Molaire massa
The identity of a substance is defined not only by the types of atoms or ions it contains but by the quantity of each type of atom or ion. For…
Automated <sup>90</sup>Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level
A quick, automated and portable system for the separation and determination of radiostrontium in aqueous samples, using Sr-resin and multi sequential…
Ion Mobility-Mass Spectrometry Techniques for Determining the Structure and Mechanisms of Metal Ion Recognition and Redox Activity of Metal Binding Oligopeptides
Electrospray ionization (ESI) can transfer an aqueous-phase peptide or peptide complex to the gas-phase while conserving its mass, overall charge,…
Preparing an Isotopically Pure <sup>229</sup>Th Ion Beam for Studies of <sup>229m</sup>Th
A methodology is described to generate an isotopically pure 229Th ion beam in the 2+ and 3+ charge states. This ion beam enables one to investigate…

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