FAN AND MEDAL
Which of the following pairs of elements is most likely to form an ionic compound? *
• potassium and bromine
• phosphorus and iodine
• rubidium and sodium
• oxygen and sulfur

Question

FAN AND MEDAL 
Which of the following pairs of elements is most likely to form an ionic compound? *
  •	potassium and bromine
 •	phosphorus and iodine
 •	rubidium and sodium
 •	oxygen and sulfur

jebonna · Answer

Potassium and bromine as it is a metal and non metal :)

ccastudentgrade10 · Answer

thank you!!

jebonna · Answer

Ionic bonds = one non metal and metal bonding
Covalent = two non metals bonding
Metallic = two metals bonding

No problem! :)

ccastudentgrade10 · Answer

can i ask you another question?

jebonna · Answer

Sure what is it? I can try help

ccastudentgrade10 · Answer

Which group would most likely form a triple covalent bond? 
  •	Group 7A
 •	Group 6A
 •	Group 5A
 •	Group 3A

ccastudentgrade10 · Answer

i dont understand how to figure it out

jebonna · Answer

Well to form a triple covalent bond an element would need to have 3 electrons spare (off of an ideal full outer shell which is 8 electrons) so if it bonds with an element of its same group it can form up to three bonds. So my guess is group 5 because if it gets 3 more electrons then it will get a full outer shell (and a triple bond is made from 3 electrons). 

Im not 100% sure but thats an educated guess

ccastudentgrade10 · Answer

okay thank you! could i bother you with one more? i have such trouble with chem haha

jebonna · Answer

I do know that two nitrogen atoms form a triple covalent bond for sure, so I would say that's correct and sure I can try haha

ccastudentgrade10 · Answer

C-C and C-H bonds are relatively stable because *
  •	they have no bond dissociation energy
 •	they have low bond dissociation energy
 •	they have high bond dissociation energy
 •	none of the above

ccastudentgrade10 · Answer

idk how to find out what their bond dissociation energy would even be

jebonna · Answer

Im sorry im not sure on that question but I think someone else could help you with that :)

ccastudentgrade10 · Answer

okay :) anyone? i see theres two other people here

ramzy197 · Answer

i think its because they have a low bond dissociation energy

ccastudentgrade10 · Answer

so b then? :)

ramzy197 · Answer

yeah :)

ccastudentgrade10 · Answer

thank you!!

ramzy197 · Answer

no problem xD

ramzy197 · Answer

im sos sorry its C because bond dissocation energy is the energy needed to break the bonds apart and because c-c and c-h are stable that means they need more energy to break them apart