Answer:
183N
Explanation:
183N we have to add both mass
Located on the element smallest number at the bottom and the corner
Answer:
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding
Explanation:
There are 20n nutrons in the atom k-42.
