genchem4

    Cards (10)

    • What are isotopes?
      Atoms of an element having the same atomic number but different mass number
    • How was the existence of isotopes demonstrated?
      Through mass spectroscopy experiments
    • What does the atomic number identify?
      An element
    • How do the atoms of isotopes of an element compare in terms of protons and electrons?
      They have the same number of protons and electrons
    • In what way do the atoms of isotopes differ?
      In the number of neutrons
    • What is the formula for mass number?
      • Mass number = number of protons + number of neutrons
      • massno.=mass \, no. =no.ofp+ no. \, of \, p^++ +no.ofn0 no. \, of \, n^0
    • What does the formula A=A =Z+ Z +n0 n^0 represent?

      • A = mass number
      • Z = atomic number (number of protons)
      • n0=n^0 =no.ofneutrons no. \, of \, neutrons
    • How can you calculate the number of neutrons in an atom?
      By subtracting the number of protons from the mass number
    • If an element has a mass number of 12 and an atomic number of 6, how many neutrons does it have?
      6 neutrons
    • What is the relationship between atomic number and the number of protons and electrons?
      • Atomic number = number of protons
      • Atomic number = number of electrons
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