(20 ) if newton's 1st law of motion did not exist, why would objects start to move by themselves? explain !

Since newtons first was motion is often stated as An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. so if there wasn't his first law things couldnt be held in place and kept in the position.

hopefully this helps :D 

The orbital diagram represents the filling of electrons in the sub levels of an orbit. The filling of the orbitals in sub- levels follow some basic rules and principles.

The orbital diagram of an orbit containing 16 electrons will be as follows:

    1s²2s²2p⁶3s²3p⁴

The maximum number of electrons in each sublevel of the orbitals are:                  2 electrons for s-sublevel with one orbital                  6 electrons for p-sublevel with three orbital                  10 electrons for d-sublevel with five orbital                  14 electrons for f-sublevel with seven orbital