fourth period
The third period is similar to the second, except the 3s and 3p sublevels are being filled. Because the 3d sublevel does not fill until after the 4s sublevel, the fourth period contains 18 elements, due to the 10 additional electrons that can be accommodated by the 3d orbitals.
Answer:
Exothermic Reaction
Explanation:
Its a combustion reaction and they are always exothermic in nature.
Answer:
The potential energy decreases whereas the kinetic energy increases.
<span>c] The golfer sent the golf ball flying toward the cup to score a hole in one.</span>
Answer:
if ice is added more salt can be dissolved ...........
