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How do sizes of atoms of alkali metals compared to their positive ions?
The atomic radius of cations is lower.
Are the sizes of Na plus and cl- same in schottky defect?
Yes, Schottky defects are created when equal number of cations (Na+) and anions (Cl-) are missing from some ionic compound, since they have single charges (= equal, = 1 as absolute value)
Which have larger ionic sizes metals or nonmetals?
Nonmetals have larger ionic sizes compared to metals. This is because nonmetals tend to gain electrons to form negatively charged ions (anions), leading to the increase in the overall size of the ion. Metals, on the other hand, tend to lose electrons to form positively charged ions (cations), resulting in smaller ionic sizes.
Can atoms have different sizes?
Yes they can.
Why don't equal masses of carbon and oxygen contain the same number of atoms?
The atoms are different sizes.
Two elements that have atoms of verry diffrent sizes means that the cast iorn is likely what?
Two elements that have atoms of very different sizes means that the cast iron is likely a substitutional alloy.
What is interstitial alloy?
An interstitial alloy is a type of metallic alloy that contains interstitial elements, which are small atoms or molecules that fit into spaces between the atoms of the host metal. These elements can occupy interstitial sites in the crystal lattice of the host metal, leading to changes in the properties and behavior of the alloy. Examples include steel, which is an interstitial alloy of iron and carbon.
Radius ratio rules for the structure of solids?
The radius ratio rule provides guidelines on the coordination numbers and structures of ionic solids based on the sizes of cations and anions. For example, in the case of octahedral coordination, a ratio of r+/r- between 0.414 and 0.732 signifies stable structures. These rules help predict the coordination geometry and packing arrangement of ions in ionic solids.
What is the formula of perovskite?
The general chemical formula for perovskite compounds is ABX3, where 'A' and 'B' are two cations of very different sizes, and X is an anion that bonds to both.
Why can't CaCl2 and AlCl3 form crystals with the same structure as NaCl?
CaCl2 and AlCl3 do not form crystals with the same structure as NaCl because their cations (Ca2+ and Al3+) have different sizes and charges compared to Na+. As a result, they do not pack together in the same way as Na+ and Cl- ions do in a NaCl crystal lattice. The differences in the sizes and charges of the cations lead to different crystal structures.
Do ionic bonds always produce giant ionic structures?
No, ionic bonds do not always produce giant ionic structures. In some cases, compounds with ionic bonds can form small molecules or molecular crystals, especially when the cations and anions are small or have similar sizes.
How does Geogia O'Keeffe's work relate to natural forms?
She paints natural forms, only at unusual angles and unusual sizes.
