Heat is in energy and temperature is measure of energy
The sun is bright and when its cold there is no sun
Velocity is height , speed is an object being propelled by force
Manganese has 2 (two) electron that would free floating and able to form a metallic bond.
The electronic configuration of manganese is (Ar) 3d5 4s2. The two electron in 4s orbital are the valence electron which can freely move from one place to another.