Question

10
2] Cr2O7 [Ans: Cr20-2-- dichromate]
4] CIO3
6] CO3
10) Na
11] Br
15] Co
16] CrO4
20] I
21] OH
26] SO3
30] C
7 Ba
12] Zn
17] CIO
19] Li
[The first two have been done for you]
1] K [Ans: K1+ - potassium]
3] CI
4] Ni
8] HCO3 9] NO2
13] Mg
14].
18] MnO4
23] ZnO2
24] SiO3
25] NO3
29] N
31] PO3
33] Ca
34] H
35] PbO2
36] HSO3
38] Cr
39] HSO4 40] NH
State the variable valencies of the following elements and give their
[The first one have been done for you]
al Cu (Ansult
22] O₂
28] PO4
27] SO
32] A
37] AIO
please its urgent plz ans this i willfollow you
correct ans mark as brainliest wrong ans was reported​

Answer 1

Answer:

4] CIO3 6] CO3 10) Na 11] Br 15] Co 16] CrO4 20] I 21] OH 26] SO3 30] C 7 Ba 12] Zn 17] CIO 19] Li