Although there exists a dipole moment in the molecule, I guess its nonpolar because the dipole is very small as the electronegativity difference between the Br and Cl is very low and so it can be neglected.
The dispersed particles of a colloid exhibit brownian motion, in which they move in a chaotic manner without a discernible pattern. The brownian motion is the erratic random motion of particles that are suspended in a fluid which results to the collision of molecules moving fast in the fluid they are in.
Rydberg formula is given by:
where, 
= Rydberg constant = 
= wavelength
and 
are the level of transitions.
Now, for = 2 and = 6
= 
= 
= 
= 
= 
= 
= 
Now, for = 2 and = 5
= 
= 
= 
= 
= 
= 
Now, for = 2 and = 4
= 
= 
= 
= 
= 
= 
Now, for = 2 and = 3
= 
= 
= 
= 
= 
= 
I would say when an atom has its valence electron shell filled like a noble gas has, it is not easily changed.
I’m not entirely sure of what you’re asking, but if you’re talking about bonding then it would be an ionic bond that is not easily changed.
A boat being accelerated by the engine
Bringing water to the boil in an electric kettle
