Answer:
Elements in the same period have the same (number of electron shells)
Would all have the same ratio of elements.
1 is chemical energy cause thats what gas and electric stoves are
2 is convection
3 is c
The correct answer is option 3. There are no attractive forces between the gas particles in an ideal gas. For an ideal gas to be achieved, the molecules are far from each other as possible where no attraction or collisions happen with each molecule.