The silicate anion in the mineral kinolite is a chain of three SiO4 tetrahedra that share corners with adjacent tetrahedra. The mineral also contains Ca2+,Cu2+ and H2O in 1:1:1 ratio. The mineral is represented as:
A
CaCuSi3O10H2O
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B
Ca4Cu4Si3O104H2O
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C
Ca2Cu2Si3O102H2O
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D
None of the above
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Solution
The correct option is CCa2Cu2Si3O102H2O
The charge on Si3O10 unit is -8. It can be balanced by two calcium ions each with +2 charge and two copper ions each with +2 charge as the ratio of the given species is 1:1:1.