hidy240 hidy240
  • 11-04-2017
  • Physics
contestada

How many neutrons does element x have if its atomic number is 54 and its mass number is 151?

Respuesta :

noahmmackay
noahmmackay noahmmackay
  • 24-04-2017
Atomic mass (z) - atomic number / # of protons (n) = # of neutrons:

151-54=97

You can easily tell what element X is. With an atomic number of 54, the element is the noble gas Xenon (Xe).
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