Chemistry, asked by ankitdhiman5603, 11 months ago

Predict the coordination number of Ca2+ in CaO crystal and also its crystal structure. [Hint: use data for ionic radii values given in your Unit]

Answers

Answered by ndahir7262
3

answer:-  6

In CaO crystal, Ca2+ is a cation and O2- is an anion.

Cationic (Ca2+) has radius 100 pm and anionic (O2-) has radius  145 pm.

Ratio of cationic/anionic radius is:

r⁺/r⁻ = 100 / 145

r⁺/r⁻ = 0.69

As 0.414 < 0.69 < 0.732, CaO will form FCC lattice.

Coordination number in FCC lattice is 6.

therefore CN of Ca2+ must be 6.

and here is the crystal structure

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Answered by janirehan492
0

Answer:

coordination number of CaO in ionic structure ??

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