" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Ca = +2
O = -2
Cl = +5
b. Cu(NO₃)₂
Cu = +2
N = +5
O = -2
c. Cr₂O₇²⁻
Cr = +6
O = -2
d. S₂O₇²⁻
S = +6
O = -2