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no I know its given.. but i was reading these notes and the dude keeps saying m/e and then on the axis it says m/z so I was like 0.0X-axis---> Isotope mass.
Y-axis---> % by mass.
BTW its always given in paper 2. You just need to know how to calculate relative atomic mass. You don't even need to know the working of Mass spectrometer.
The aluminium ion is very small and is pack with 3+ charges-the charge density is therefore very high. so the electrons are dragged over to the aluminium ion. However since the chlorine is more electronegative than aluminium, it pulls the electrons towards itself such that the bond formed is polar.
That would be covalent compounds
^the guy answered it correct.
You must be talking about Volatility. The weaker the inter-molecular forces are, the more volatile the compound is. Alkanes are generally volatile. This came in an MCQ.
yea but thats going to come under covalent compounds right?
Strictly speaking, yes. As covalent compounds have weak inter-molecular forces. Always relate volatility with weak inter-molecular forces.
hmm I think I get it .. so basically Al and Cl end up sharing the electrons but Al and F can't cause F took them almost competely?The aluminium ion is very small and is pack with 3+ charges-the charge density is therefore very high. so the electrons are dragged over to the aluminium ion. However since the chlorine is more electronegative than aluminium, it pulls the electrons towards itself such that the bond formed is polar.
However in the case of aluminium flouride, flourine is much more electronegative than aluminium and so it drags the electrons towards itself. Aluminium has lost control over its electrons and flourine has gained control. Hence aluminium flouride is ionic
I can explain this more fully if u want me to
nah I just saw a question in the specimen paper of 2000 or 2001 about aluminium chloride and it's vapour state
Yes thats right. Chlorine is not electronegative enough to pull the electrons all the way to itself because of the high charge density of aluminium but fllourine is capable. so yea F takes them completely.
Mg : 1s2 2s2 2p6 3s2
In Mg the outermost electron is in 3S while in Al it is in 3P. 3P is further away from the nucleus hence the ionization energy of Mg is higher
ty =]
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