• Support PF! Buy your school textbooks, materials and every day products via PF Here!

Which is it?

  • Thread starter matrix5
  • Start date
I found in a text that had this question.

why should F, n row 2, be more reactive than iodine, in row 5, while Li, in row 2, is less reactive than Rb, in row 5?

BUT this does not agree with this text
http://richardbowles.tripod.com/chemistry/reactivity/reactivity.htm [Broken]

as it is more reactive as you go down in the PTOE.
 
Last edited by a moderator:

Gokul43201

Staff Emeritus
Science Advisor
Gold Member
6,987
14
Notice that your link doesn't say anything about non-metals, where reactivity decreases as you go down. The question is correct.

The reason for the decreasing reactivity down the halogen group shares the same basis as the reactivity trend among the metals (though the trend is reversed). The non-metals or electronegative elements react by gaining electrons, while the metals (electropositive elements) react by losing electrons. The reasons for the trends follow naturally from this.
 

Related Threads for: Which is it?

Replies
4
Views
1K
  • Posted
Replies
3
Views
1K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top