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the value of n in the molecular formula Be n Al 2 Si 6 O 18 is

the value of n in the molecular formula  BenAl2Si6O18is

Grade:11

1 Answers

Arun
25750 Points
6 years ago
Dear Ashutosh
 
This is the example of cyclic silicate with the general formula (SiO3)n2n-
Since there are 6 silicon atoms thus -2n = -12, to balance the charge beryllium and aluminium are present. Aluminium has +3 charge and there are two aluminium atoms thus +6 charge is balanced .now + 6 charge is left which has to be balanced by beryllium. Be has +2 charge thus, there should be three beryllium atoms to balance the whole molecule. Thus n=3.
 
 
Regards
Arun (askIITians forum expert)

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