## Question

if all the ions of NaCl str is removed from one of the diagonal plane , then the formula of compd. will be ---- ?

**Solution by Joshi sir.**

Normal formula of compound is Na_{4}Cl_{4}

now on removing all the atoms from 1 body diagonal,

lost atoms = 4 Cl at corner, 2 Na from edge centre, 2 Cl from face centre, 1 Na from body centre

so loss in Cl = 4*1/8 + 2*1/2 = 1.5

and loss iin Na = 2*1/4 + 1*1 = 1.5

so new formula = Na_{2.5}Cl_{2.5}

so formula will remail same

## Read 1 Solution.

removin**g one diagonal plain means removing the 3-2 ( a total of 6 chlorine atoms [in blue]) + 3 Na + ions **

**AMIT DAS**12 year ago is this solution helpfull: 21 9