Need help understanding electronegativity/polarity

Watch
bobbricks
Badges: 19
Rep:
?
#1
Report Thread starter 6 years ago
#1
Can someone explain what this means please (from the OCR A textbook):
The electronegativity depends upon an element's position in the Periodic Table. Reactive nonmetallic elements (such as O, F and Cl) form compounds with the most electronegative atoms. Reactive metals (such as Na and K) form compounds with the least electronegative atoms.

When it says the reactive metals "form compounds" does that mean form covalent bonds because I thought metals couldn't form covalent bonds?
0
reply
Nat_LPS
Badges: 4
Rep:
?
#2
Report 6 years ago
#2
(Original post by bobbricks)
Can someone explain what this means please (from the OCR A textbook):
The electronegativity depends upon an element's position in the Periodic Table. Reactive nonmetallic elements (such as O, F and Cl) form compounds with the most electronegative atoms. Reactive metals (such as Na and K) form compounds with the least electronegative atoms.

When it says the reactive metals "form compounds" does that mean form covalent bonds because I thought metals couldn't form covalent bonds?
I think you can have ionic compounds
0
reply
Pigster
Badges: 19
Rep:
?
#3
Report 6 years ago
#3
OCR A hides the fact that ionic bonds have covalent character. Don't panic. Or for that matter don't try to understand it if you want to do well in their exams. Just appreciate that there is the trend which starts in the bottom left and makes its way to the top right.

Any questions they set are obvious in their selection of elements. In an emergency, they'll give you a bunch of electronegativity values.
0
reply
bobbricks
Badges: 19
Rep:
?
#4
Report Thread starter 6 years ago
#4
(Original post by Nat_LPS)
I think you can have ionic compounds
It says "Reactive metals (such as Na and K) form compounds with the least electronegative atoms". If this were ionic, then why would Na form compounds with the least electronegative atoms (like other metals lower down group 1)?
0
reply
bobbricks
Badges: 19
Rep:
?
#5
Report Thread starter 6 years ago
#5
(Original post by Pigster)
OCR A hides the fact that ionic bonds have covalent character. Don't panic. Or for that matter don't try to understand it if you want to do well in their exams. Just appreciate that there is the trend which starts in the bottom left and makes its way to the top right.

Any questions they set are obvious in their selection of elements. In an emergency, they'll give you a bunch of electronegativity values.
So do ionic bonds have covalent character depending on how electronegative each of the elements in the bond are? Tbh, since you've mentioned it, I have this urge to try and understand it now
0
reply
Pigster
Badges: 19
Rep:
?
#6
Report 6 years ago
#6
Yes they do and yes you should.

You could consider getting Philip Matthews' Advanced Chemistry 1&2 - 1992 old school chemistry textbooks, 1p (+P&P) from Amazon (and other reputable bookshops).
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Current uni students - are you thinking of dropping out of university?

Yes, I'm seriously considering dropping out (85)
14.1%
I'm not sure (27)
4.48%
No, I'm going to stick it out for now (190)
31.51%
I have already dropped out (13)
2.16%
I'm not a current university student (288)
47.76%

Watched Threads

View All