Answer:
Conduction: Some metalloids, such as silicon and germanium, can act as electrical conductors under the right conditions, thus they are called semi-conductors. Luster: Silicon for example appears lustrous, but is not malleable or ductile (it is brittle - a characteristic of some nonmetals).
Explanation:
Explanation:
The electric potential is the electric potential energy per unit of charge
Using this definition, we can calculate the electrostatic potential energy change between point A and B:
Electron: 
Proton: 
Neutral hydrogen atom: 
Singly ionized helium atom:
The absorption spectrum would have all the wavelengths of the light source but would have black lines where the two red and one orange lines were in the emission spectrum
