To arrange these elements according to the atomic radius (smallest to largest) would be:
Be, Mg, Ca, Sr, Ba
1)4
2)3
3)0
4)12
4(NH4)3 + 3Pb(NO3)4= Pb3(PO4)4 +12NH4NO3
Answer:
true
Explanation:
hope this helps, I took the test too
It will have 12 neutrons.