A) Mass Number
B) Protons and Electrons
C) (I think group but I'm not 100% sure on this...)
D) 12 (To work out the number of neutrons you do MASS number - ATOMIC number aka the number of protons so in this case you'd do 23-11=12)
Hope this helps
2Ca(OH)2(aq) + 2FeCl3(aq) on the dead locs
Answer: C hope this helps Have a wonderful day :)
Explanation:
