Answer:
You cross multiply the valencies as shown
Explanation:
1. Al(OH)3
2. The valency of Calcium is 2- not 1- so,
CaO
Answer:
with the help of adding mass of protons and neutrons
Explanation:
measuring the atomic mass of an element , we add up the proton mass with the neutron mass it gives us the atomic mass
Ok and? What happened? Where is the question
I believe it has a positive charge, an easy way I remember is Positive and Proton both start with “P”
