More on atoms c1.2

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  • 1.2c-e More about atoms
    • The size of an atom is 10-10
    • Electrons
      • Outside the nucleus
      • Charge of -1 and mass of 1/1840
      • Charge of -1
    • Protons
      • Have a charge of +1
      • Mass of 1
      • Within the nucleus
    • Neutron
      • Charge of 0
      • Relative mass of 1
      • Within the nucleus
    • Ions are electrically charged particles formed when atoms lose or gain electrons. They have the same electronic structures as noble gases.
    • Mass number is the amount of protons and neutrons in the nucleus.
      • Number of protons and electrons squal each other
        • Charge on an atom is neutral
    • Isotopes are different forms of the same element with equal numbers of protons but different numbers of neutrons in their nuclei

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