Question 12 (1 Viewer)

[ThugAngel]

Wot's with qu 12. Did anyone no the answer?

 

[Managore]

It was C aparently.. but I guessed A, not having much of an idea whatsoever

 

[mushroom_head]

i guessed A as well. Can someone please explain

 

[sub]

the only one that works is C...correct me if im wrong....

cos NH4 is the only coordinate covalent former...all the rest contain CH4, but that cant form coordinate covalents, cos carbon only has 4 electrons..ie no more to donate.
hope that helps

 

[googleplex]

methane is covalent, water is covalent.

process of elimination even if you didnt know hf was coordinate covalent

 

[xeriphic]

yes I did process of elimination

 

[Kazuya]

i think water can also go the coordinate covalent bond way to make hydronium, H3O+. But yeah in the choices it was paired with methane, which is already full so it's gotta be C

 

[+GriM ReApeR+]

damn...I guessed b

 

[sig]

yeah I stuffed that one up

 

[Aerials]

*sigh* i got c... was a bit of a stab in the dark really.. but anyway

 

[aim54x]

process of elimintation. i kew amonnia had to be one, that ruled out two and the HF was the only one that it could b.

 

[kimmeh]

that question was worded funny. is it asking for the two same compounds forming together to form the same compound? or two diferent compounds forming one compound with two different "ends"?

 

[euphoric]

i guessed C ^^

 

[tina_goes_doo]

I actually tried to draw the lewis diagrams for these and C ended up working.

 

[lucyinthehole]

damn... i think i guessed c, but then ended up putting b. god, i can't even guess right!

 

[utopia_parkway]

i guessed C, but when the hydrogen fluoride teams up with the ammonia does the two electrons from the ammonia go to the hydrogen in the fluorde, if yes the wont the H atom in the hydrgen flouroide end up with 4 electrons. and i'v heard that atoms hate having 4 electrons, it really pisses them of.