Chapter 3: Problem 84
Research several elements whose symbols are inconsistent with their English names. Some examples include silver, Ag; gold, Au; and mercury, Hg. Compare the origin of these names with the origin of the symbols.
Chapter 3: Problem 84
Research several elements whose symbols are inconsistent with their English names. Some examples include silver, Ag; gold, Au; and mercury, Hg. Compare the origin of these names with the origin of the symbols.
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How many orbitals are completely filled in an atom that has 12 electrons? The electron configuration is 1\(s^{2} 2 s^{2} 2 p^{6} 3 s^{2}\)
Many elements exist as polyatomic molecules. Use atomic masses to calculate the molecular masses of the following: \begin{equation} \begin{array}{l}{\text { a. } \mathrm{O}_{2}} \\ {\text { b. } \mathrm{P}_{4}} \\ {\text { c. } \mathrm{S}_{8}}\end{array} \end{equation}
Calculate the number of atoms present in each of the following: \begin{equation} \begin{array}{l}{\text { a. } 2 \text { mol Fe }} \\ {\text { b. } 40.1 \text { g Ca, which has an atomic mass }} \\ {\text { of } 40.08 \text { amu }} \\\ {\text { c. } 4.5 \text { mol of boron-11 }}\end{array} \end{equation}
How many atoms are in 0.75 moles of neptunium?
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