1ZnS ia face centred ya noe d r+ /r- ratio
u can find wat ui need
d ionic compound XY has a ZnS type of structure if d radius of X+ is 22.5 pm wat is d ideal radius of Y- ?
a beam of X-ray from a Cu target, with wavelength 154.1pm is passed at low angles onto d surface of a Ag crystal .As angle is increased a between d planes of Ag atoms dat give rise to dis reflecn ?
wat type of bonds r present in PF3 [ i mean does it contain multiple bonds]
plz ans me quickly
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11 Answers
1PF3 also conatins back bonding
second q i m nt gettin d meanin of ur last line
neways u can use bragg's equation 2 finda answr
11yeah i guess one will b the regular one n d othr will b cuz of back bond
1ZnS has a structure in which the Zn+2 atoms occupy the terahedral void .... so now u can calculate this one easily ..
1PF3 ka structure toh aata hi hoga .. isme problem kya hai ...
F
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: P -- F
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F
1coordination no of ZnS is 4:4 so 0.414<r+/r-<0.732
now find out
PF3 mein multiple bonds hoga for back-bonding
1lekin back bonding to us case mein hota hain na SF5 .. where there is excess electrons in the central atom !