D sublevel because the s sublevel has one orbital, the p sublevel has three orbitals, the d sublevel has five orbitals, and the f sublevel has seven orbitals. In the first period, only the 1s sublevel is being filled.
potassium reacts the most vigorously.
Science of, or study of contours, or the lines outlining a scene, drawing, etc.
Density = mass / volume
D = 550 / 25
D = 22 g/mL
hope this helps!
Answer:
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another.
Explanation:
This means that a system always has the same amount of energy, unless it's added from the outside.
