Concept explainers
Interpretation: Magnesium boride is stated to behave as a superconductor and its unit cell is given in the Figure. A boron atom in the center of unit cell (left) which is part of hexagonal close-packed crystal structure (right). The formula of magnesium boride is to be identified.
Concept introduction: Magnesium boride is an ionic compound which behaves as a superconductor. Its chemical formula is
Crystal structure of a material shows the number of ions, atoms or molecule in the ordered arrangement in the material.
There are different types of crystal lattice such as hexagonal, body centered, face centered and end centered cubic lattices.
To determine: The formula of magnesium boride.
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CHEMISTRY W/WRKBK AND SMARTWORK (LL)
- (f) SO: Best Lewis Structure 3 e group geometry:_ shape/molecular geometry:, (g) CF2CF2 Best Lewis Structure polarity: e group arrangement:_ shape/molecular geometry: (h) (NH4)2SO4 Best Lewis Structure polarity: e group arrangement: shape/molecular geometry: polarity: Sketch (with angles): Sketch (with angles): Sketch (with angles):arrow_forward1. Problem Set 3b Chem 141 For each of the following compounds draw the BEST Lewis Structure then sketch the molecule (showing bond angles). Identify (i) electron group geometry (ii) shape around EACH central atom (iii) whether the molecule is polar or non-polar (iv) (a) SeF4 Best Lewis Structure e group arrangement:_ shape/molecular geometry: polarity: (b) AsOBr3 Best Lewis Structure e group arrangement:_ shape/molecular geometry: polarity: Sketch (with angles): Sketch (with angles):arrow_forward(c) SOCI Best Lewis Structure 2 e group arrangement: shape/molecular geometry:_ (d) PCls Best Lewis Structure polarity: e group geometry:_ shape/molecular geometry:_ (e) Ba(BrO2): Best Lewis Structure polarity: e group arrangement: shape/molecular geometry: polarity: Sketch (with angles): Sketch (with angles): Sketch (with angles):arrow_forward
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