What is unusual about solid water compared to solids of other materials?
1 answer:
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1. Find its coordination figure/coordination number of central atom (CF)
Ev = Vallence electron of central atom
Σe = electrons donated from substituents
Terminal O gives 0 electrons, hence Σe = 3 x 0
charge = charge of the compound
2. Find EP (electron pairs) and LP (lone pairs)
LP = CF - EP
3. Draw the skeleton with octet substituents (top right figure)
4. Find formal charge for each atoms (Qf)
5. Write formal charge near atom in skeleton
6. Enjoy
#1
- As 2 electrons are donated Hence the No of electrons =38-2=36
#2
- As 3 electrons donated the no of electrons=23-3=20
#3
- No of neutrons=55-26=29
#4
- As 2 electrons are donated no of electrons =48-2=46
#5
- No of neutrons=210-82=128