JAMB - Chemistry (2008 - No. 10)
In the periodic table, the electrical and thermal conductivities are properties of elements that
decrease across the period and increase down the group
increase across the period and decrease down the group
decrease across the period and down the group`
increase acrosss the period and down the group
Объяснение
In the periodic table, electrical and thermal conductivities of elements decrease across the period and increase down the group.