Which list shows descending conductivity with correct order?

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Multiple Choice

Which list shows descending conductivity with correct order?

Electrical conductivity ranking among common metals: Silver has the highest room-temperature conductivity, followed very closely by copper. Aluminum conducts more slowly than copper, while iron conducts more slowly than aluminum, and lead conducts the least of these metals. So the sequence from highest to lowest is silver, copper, aluminum, iron, lead. This reflects how easily electrons can move through the metal lattice. Silver and copper have the smallest resistivities (most free-electron movement) among these, aluminum is a good but higher-resistivity conductor, and iron and especially lead have higher resistivities, reducing their conductivity. Other lists would mix in metals with lower conductivity ahead of higher-conductivity ones, which isn’t consistent with these values.

Electrical conductivity ranking among common metals: Silver has the highest room-temperature conductivity, followed very closely by copper. Aluminum conducts more slowly than copper, while iron conducts more slowly than aluminum, and lead conducts the least of these metals. So the sequence from highest to lowest is silver, copper, aluminum, iron, lead.

This reflects how easily electrons can move through the metal lattice. Silver and copper have the smallest resistivities (most free-electron movement) among these, aluminum is a good but higher-resistivity conductor, and iron and especially lead have higher resistivities, reducing their conductivity. Other lists would mix in metals with lower conductivity ahead of higher-conductivity ones, which isn’t consistent with these values.

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