atomic structure

    Cards (15)

    • where are the protons found?
      in the nucleus.
    • where are neutrons found?
      in the nucleus.
    • where are electrons found?
      orbiting the nucleus in shells.
    • are protons and electrons the same number? true of false?
      true.
    • what number is the atomic mass of ²³₁₁Na?
      23.
    • what is atomic mass?

      protons + neutrons.
    • how do find the number of neutrons in the nucleus?
      atomic mass - atomic number.
    • where is the atomic number?
      found on the bottom of an element e.g ₁₁Na.
    • what is the atomic number?
      the number of equal protons and electrons.
    • what are groups?
      how many electrons in the outer shell.
    • what charge do you get when you lose an electron?
      positive. e.g 11 protons, 10 electrons. meaning it has a charge of +1 because of the difference between electrons and protons. however if you lost 2 electrons, the charge would be +2 because of the difference. P-E
    • what charge do you get when you gain electrons?

      negative. e.g 11 protons, 12 electrons. meaning it has a charge of -1 because of the difference between protons and electrons. however if you gained 2, the charge would be -2. (P-E)
    • what is the charge of a neutron?
      neutral.
    • what is the charge of a proton?
      positive.
    • what is the charge of electron?
      negative.
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