Lithium, sodium and potassium are elements in Group I of the Periodic Table.
Chlorine, bromine and iodine are elements in Group VII of the Periodic Table.
Which row identifies the least dense of these elements in each group?
Group I: lithium / Group VII: chlorine
2 )
Group I: lithium / Group VII: iodine
3 )
Group I: potassium / Group VII: chlorine
4 )
Group I: potassium / Group VII: iodine
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!