Question

Which of the following shows three elements in order of decreasing conductivity?

- O, Ge, Mn
-Ge, O, Mn
-Mn, Ge, O
-Mn, O, Ge

Answer 1

The correct answer is option D which is the decreasing order of conductivity is Mn, O, Ge.

Step-by-step explanation:

• Conductivity of an element is the ability of atoms of an element to pass energy.
• There are many types of conductivities like electrical conductivity, thermal conductivity etc.
• So this ability of atom depends actually upon the number of valence electrons in outer shell and feasibility to lose electrons.
• According to periodic table, conductivity of element decreases across the period and down the group.
• Hence the conductivity of Mn is high than O and Ge.
• The O is higher conductivity after that Ge.
• Ge is least conductive element in list.

Answer 2

You can easily answer this if you know the periodic trends. For the property of electrical conductivity, it decreases across a period and decreases also down a group. Thus, the most conductive element must be Mn, while the least conductive one is Ge. So, the answer is: -Mn, O, Ge