Atomic Nucleus

6 cards in "Atomic Nucleus"

• Choice

  • A nucleus of **hydrogen** always has one proton (Z = 1), and in nature, 99.98% of all hydrogen nuclei have 0 neutrons (N = 0). What is the mass number A?
  • H-3 (or hydrogen-3, otherwise known as tritium) is an isotope of hydrogen with __________.
  • The atomic number Z of an atom defines what element it is and is determined by how many ________ are in its nucleus.
  • The **positively-charged** basic nuclear particle is called a ________.
  • A nucleus of hydrogen always has 1 proton, but various forms of hydrogen – called isotopes – are possible. For example, hydrogen-2 (or H-2, otherwise known as deuterium) has 1 neutron. What is the mass number A for this isotope of hydrogen?
  • The **electrically neutral** basic nuclear particle is called a ________.

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