In the mid-1900s, most scientists used the Bohr atomic model to study atoms. In the Bohr model, electrons move in set paths arou
nd the atom's nucleus. In current atomic models, electron clouds are shown around the atom's nucleus. Electron clouds are regions where electrons are likely to be found.
What is a limitation of current atomic models as compared to the Bohr atomic model?
A. Current atomic models do not indicate the position of the nucleus within the atom's structure.
B. Current atomic models do not show how many electrons an atom has.
C. Current atomic models do not show where the electron is but only where the electron is likely to be.
A single replacement reaction, sometimes called a single displacement reaction, is a reaction in which one element is substituted for another element in a compound. The starting materials are always pure elements, such as a pure zinc metal or hydrogen gas, plus an aqueous compound.
