Question

selenium is :

a: Insulator in light
b: Insulator in dark
c: conductor in dark
d: semiconductor in dark​

Answer 1

c)Conductor in dark

Explanation:

As selenium(Se) element number is 34 having 2 ½ spins are vacancy. So, it mostly it acts as photocells which takes the energy from sun as solar energy as charge. Obviously, we can say it acts as conductor in light conditions and insulator in dark conditions. So, that again it needs light to act as conductor.