Learn about and revise the atom, isotopes, radioactivity and half-life with GCSE Bitesize Combined Science. ... An atom can be represented using the symbol notation: \(_{Z}^{A}\textrm{X}\) ...

d–f, Logarithm of isotope ratios (57 Fe/ 54 Fe, 44 Ca/ 40 Ca and 26 Mg/ 24 Mg) or, equivalently, approximate isotope ratios in delta notation (1,000δ 57 Fe, 1,000δ 44 Ca and 1,000δ 26 Mg ...

This symbol shows that chlorine has 35 particles in the nucleus close nucleus The central part of an atom. It contains protons and neutrons, and has most of the mass of the atom. The plural of ...