ethane is the compound of the answer you are asking help
The number of valence electrons of elements in a group is the same as the group number
<span>In physics, the law of conservation of energy states that the total energy of an isolated system remains constant—it is said to be conserved over time. Energy can neither be created nor destroyed; rather, it transforms from one form to another.</span>
Answer:
Oxygen
Explanation:
Water's formula is H20. Which is two hydrogen and one oxygen.
