Answer:
The major forces acting in an atom are the strong force, the weak force and the electromagnetic force. Electromagnetic forces of attraction and repulsion based on charges keep the subatomic particles and make them move.These forces are also responsible for energy levels of electrons and their positions.
Explanation:
A B and C are all chemical changes. paper tearing is not.
Answer: Number of protons and number of valance electrons.
Explanation:
There are three factors which determine metallic bond strength. greater the no of protons, greater will be attraction between nucleus and valance shell electrons and stronger will be metallic bond. greater no of valance electron, greater will be attractions between nucleus and electrons and stronger will be bond.
The density of the object is 19 g/cm³.
The mass of the object is 73 g.
The volume of the object is 3.8 cm³.
Density = mass/volume = 73 g/3.8 cm³ = 19 g/cm³
