So just balance the eqn and take the numbers infront of it
take the unknown (the one that the qn is asking for) and ratio it with the known variable
and then put in the mol that you know for the known variable and just do math to get the answer for the unknown
Answer:
The elements in each group have similar chemical properties.
Explanation:
This is correct because all elements in a group have a similar electron configuration in the outer most shell, therefore they will have similar chemical properties.