Question

which of these sentences from the text provides an argument that supports the current arrangement of the periodic table? another departure has been the invention of periodic systems aimed at summarizing the properties of compounds rather than elements. throughout its long history, the periodic table has been disputed, altered, and improved as science has progressed and as new elements have been discovered. hefferlin’s chart reveals that certain properties of molecules—the distance between atoms and the energy required to ionize the molecule, for instance—occur in regular patterns. in some instances, new findings initially appeared to call into question the theoretical foundations of the periodic

Explanation:

The periodic table arranges elements based on their properties. The fact that certain properties of molecules (which are made of elements) occur in regular patterns, as stated in Hefferlin's chart, supports the idea that elements have predictable and regular - patterned properties, which is the basis of the current periodic - table arrangement. The other options discuss departures from element - based periodic systems, the history of changes in the periodic table, and new findings that question its foundations, none of which directly support the current arrangement.

Answer:

Hefferlin’s chart reveals that certain properties of molecules—the distance between atoms and the energy required to ionize the molecule, for instance—occur in regular patterns.