Elements which composed of an equal amount of three components protons, neutrons and electrons are considered neutral elements. example of neutral elements are hydrogen, helium, lithium and beryllium...
Answer:
hope it helps
Explanation:
Atoms get rearranged and make up different molecules. No atoms are created nor destroyed.
The vertical columns are groups
The horizontal rows are periods
Answer: 11.25 J
Explanation: Kinetic energy is expressed as the product of mass and the squared of velocity divided by 2.
