Which statement describes a trend in the elements going down Group VII?
They are darker in colour.
2 )
They are displaced from their salts by elements lower down the group.
3 )
They are more reactive.
4 )
They have lower boiling points.
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...