Answer:
1: d 7, 18
2: a 17th
3: c Fe2O3.xH2O
4: d electroplating
5: a groups
the above are the right answers according to me
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Answers & Comments
Answer:
1: d 7, 18
2: a 17th
3: c Fe2O3.xH2O
4: d electroplating
5: a groups
the above are the right answers according to me