DC+ SG ah...i remember the days i used to 'borrow' chloroform from my chem lab... then when in uni...was doing biochem..so borrow various industrial acids and dna samples the good old days
lpx88 SG K i have another qn, this time is on ionic bonds An ionic bond btw Na+ and Cl- Why they say in the NaCl crystal, the lattice structure has each Na+ ion surrounded by SIX Cl- ion ah? Why SIX?Not other number like 7,8,9..bla bla bla?
unclebutcher SG not sure if you have studied it...but coordination number of na is 6 . i.e. it can have a max of 6 cl- ions surrounding it
teraexa SG It is all about the packing effect of ions. There's Face-Centered Packing, Cubic-Centered Packing. They're, however, out of A and O level syllabus and thus no need to bother about them.
