would you like to tell me what are the differences between periods and groups? ( properties) and explain one by one!!!!
Thx
periods and groups (chem)---urgent
2006-11-15 2:48 am
回答 (1)
2006-11-15 3:21 am
✔ 最佳答案
Atoms in the same period would have the same no. of electron shell. Atoms in the same group would have the same no. of electrons in the outermost shell. Most of the have the similar chemical propeties and physical propeties in the same group.
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