Answer:
there are 3 electrons in a lithium atom. Looking at the picture, you can see there are two electrons in shell one and only one in shell two.
Explanation:
<h3>During physical changes, the composition od the original substance is not altered, but the properties of the original substance are altered. During a chemical change the composition od the original substance is not altered and the change is irreversible. Melting of butter and wax is an example of chemical changes.</h3>
It's a Single Replacement (or Displacement) Reaction because the equation follows the basic format for that type of reaction.
For Single Replacement Reactions, the general formula is:
AB + C = AC + B
So, if there's an element and compound on both sides of the equation, it's single replacement.
