she my problem is this. im understsanding like Na + Cl is NaCl
but what about these like this...
Cu+1 + Cl
Sn+4 + Cl
Cr+7 + Se
please expalin
thx!!
2006-12-03 13:46:20 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
CuCl because the +1 from Cu cancels the -1 from Cl
SnCl4 because the +4 from Sn cancels the -1*4 from Cl
Cr2Se7 because the +7*2 = -2*7
2006-12-03 13:50:32 · answer #1 · answered by Math-Chem-Physics Teacher 3 · 0⤊ 0⤋
Well, Na has +1 charge, so if one Cl- attaches to it, it cancels the charge for a neutral molecule. Cu also has a +1 charge, so it would form CuCl. Sn 4+ needs more Cl- to form a neutral molecule, so it would form SnCl4. I can't answer the last one because I don't know the charge on a Se atom right offhand and you haven't posted it.
2006-12-03 21:52:31 · answer #2 · answered by Amy F 5 · 0⤊ 0⤋