Flashcards
Atomic structure definitions
Cards in this deck (10)
- 1Atomic numberthe atomic of an atom is the number of protons in its nucleus
- 2Mass numberthe mass number of an atom is the number of protons plus neutrons in its nucleus
- 3Molar massmolar mass is the mass of one mole of a chemical; gmol-1
- 4Molecular formulaa molecular formula shows the number of atoms of the different elements in one molecule of a compound
- 5Empirical formulaan empirical formula shows the simplest whole number ratio of the atoms of different elements in a compound
- 6Isotopeare atoms of the same element with the same atomic number but different mass number
- 7Relative isotopic massthe mass of one atom of an isotope relative to the mass of one atom of carbon-12, for which the relative mass is defined as exactly 12
- 8Relative atomic massthe weighted average mass of an atom of an element relative to the mass of one atom of carbon-12, for which the relative mass is defined as exactly 12
- 9First ionisation energythe first ionisation energy of an element is the energy needed to remove one electron from each atom in one of gaseous atoms
- 10Successive Ionisation energiesthese are the energy amounts needed to remove successive electrons of an element one by one from each atom, then 1+ ion, then 2+ ion, tc. (according to the number of electrons in the atom) , in one mole of gaseous atoms
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- A level Chemistry Flashcards on Atomic structure definitions , created by Angel Jose on 28/06/2017.
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- Angel Jose
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