The `"OLIVINE"` series of minerals consists of crystal in which `Fe^(2+)` and `Mg^(2+)` ions may substitute for each other causing susbstitutional impurity defects without changing the volume of unit cell. In `"OLIVINE"` series of minerals, `O^(2-)` ions exist as fcc with `Si^(4+)` occupying one-fourth of `OVs` and divalent metal ions occupying one-fourth of `OVs` and divalent metal ions occupying one-fourth of `TVs`. The density of "forsterite" (magnesium silicate) is `3.21 g cm^(-3)` land that of "fayalite" (ferrous silicate) is `4.34 g cm^(-3)`.
The formula of "fayalite mineral" is

The "OLIVINE" series of minerals consists of crystal in which Fe^(2+) and Mg^(2+) ions may substitute for each other causing susbstitutional impurity defects without changing the volume of unit cell. In "OLIVINE" series of minerals, O^(2-) ions exist as fcc with Si^(4+) occupying one-fourth of OVs and divalent metal ions occupying one-fourth of OVs and divalent metal ions occupying one-fourth of TVs . The density of "forsterite" (magnesium silicate) is 3.21 g cm^(-3) land that of "fayalite" (ferrous silicate) is 4.34 g cm^(-3) . If in "forsterite mineral" bivalent Mg^(2+) ions are to be replaced by unipositive Na^(o+) ions, and if Na^(o+) ions are occupying half of TV_(s) in fcc lattice, the arrangement of rest of the constituents is kept same, then the formula of the new solid is:

The "OLIVINE" series of minerals consists of crystal in which Fe^(2+) and Mg^(2+) ions may substitute for each other causing susbstitutional impurity defects without changing the volume of unit cell. In "OLIVINE" series of minerals, O^(2-) ions exist as fcc with Si^(4+) occupying one-fourth of OVs and divalent metal ions occupying one-fourth of OVs and divalent metal ions occupying one-fourth of TVs . The density of "forsterite" (magnesium silicate) is 3.21 g cm^(-3) land that of "fayalite" (ferrous silicate) is 4.34 g cm^(-3) . If in "forsterite mineral" bivalent Mg^(2+) ions are to be replaced by unipositive Na^(o+) ions, and if Na^(o+) ions are occupying half of TV_(s) in fcc lattice, the arrangement of rest of the constituents is kept same, then the formula of the new solid is:

The "OLIVINE" series of minerals consists of crystal in which Fe^(2+) and Mg^(2+) ions may substitute for each other causing susbstitutional impurity defects without changing the volume of unit cell. In "OLIVINE" series of minerals, O^(2-) ions exist as fcc with Si^(4+) occupying one-fourth of OVs and divalent metal ions occupying one-fourth of OVs and divalent metal ions occupying one-fourth of TVs . The density of "forsterite" (magnesium silicate) is 3.21 g cm^(-3) land that of "fayalite" (ferrous silicate) is 4.34 g cm^(-3) . If in "forsterite mineral" bivalent Mg^(2+) ions are to be replaced by unipositive Na^(o+) ions, and if Na^(o+) ions are occupying half of TV_(s) in fcc lattice, the arrangement of rest of the constituents is kept same, then the formula of the new solid is:

In a solid ,oxide (O^(2-)) ions are arranged in ccp, cations (A^(3+)) occupy one -fourth of tetrahedral void and cations (B^(3+)) occupy half of the octahedral voids . What is the formula of the compound?

Which divalent metal ion has maximum paramagnetic character among the first series transition metals ?

O_(2-) ions are arranged in ccp in spinel structure. A^(2+) ions occupy 1//8 of TV_(s) and B^(o+) ions occupy half of OV . The void volume of unit cell = 0.11 Å . Find the value of A ?

Barium titanate crystallizes in perovskite structure (ABO_(3)) which is a cubic lattice with barium ions occupying the corners of the unit cell ,oxide ions occupying the face centres and titanium ion occupying centes of unit cell.if Ti^(4+) ions are described as occupying the holes in Ba-O lattice. then type of hole and fraction of these holes occupied by these ions are