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  • Primary difference between ionic and covalent bonds

    An ionic bond involves the transfer of electrons from one atom to another, while a covalent bond involves the sharing of electrons between atoms.
  • Atomic number of an element with 11 protons

    The atomic number is 11, which equals the number of protons.
  • Mass number of an element with 11 protons and 12 neutrons

    The mass number is 23, calculated as protons (11) plus neutrons (12).
  • Why noble gases rarely form chemical bonds

    Noble gases have a full outer electron shell, making them stable and unlikely to form bonds.
  • Balanced chemical equation for hydrogen and oxygen forming water

    The balanced equation is \(2H_2 + O_2 \rightarrow 2H_2O\).
  • pH indication of a substance with pH 2

    A pH of 2 indicates the substance is a strong acid.