Answer the following question:
 
Element A B C D E
Protons 6 7 8 8 9
Neutrons 10 9 8 10 10
Electrons 6 7 8 8 9
 
From the table above, identify the isotopes, isobars, and isotones and  give reason:
 
i. Which are isotopes? -
Reason:
ii. Which are isobars? -
Reason:
iii. Which are isotones? -
Reason: