derivation of radius ratio

Derivation of the Relationship Between Radius r of the Octahedral Void and the Radius R of the Atoms in the Close Packing. A sphere fitting into the octahedral void is shown by shaded circle. A sphere above and a sphere below this small (shaded) sphere have not be..

Radius Ratio Rules - For the stability of an ionic compound, each cation should be surrounded by maximum number of anions and vice versa. The number of oppositely charged ions surrounding each ion is called its co-ordination number. The larger is the size of the cation the great..

For the stability of an ionic compound, each cation should be surrounded by maximum number of anions and vice versa. The number of oppositely charged ions surrounding each ion is called its co-ordination numbe..

A sphere fitting into the octahedral void is shown by shaded circle. A sphere above and a sphere below this small (shaded) sphere have not been shown in the figur..

What is the ratio of the surface area of a sphere with radius 1 in. to the surface area of a sphere with radius 2 in.? => 3 : 2 or 1 : 5 or 1 : 4 or None of the above..

T-ratios of standard angles - 0 o , 30 o , 45 o , 60 o and 90 o are called standard angles. These angles are called standard angles because it is possible to obtain simple mathematical ratios for these angles. The students are advised to learn the T-ratios of these ang..

Relation between Focal Length and Radius of Curvature in Spherical Mirrors - Consider a ray of light AB, parallel to the principal axis, incident on a spherical mirror at point B. The normal to the surface at point B is CB and CP = CB = R, is the radius of curvature. The ray AB,..

Trigonometric Ratios of Multiple and Sub-multiple Angles - The following results have already been derived under Circular functio..

What is the ratio of volumes of a cone of radius 28 cm and height 42 cm to a cylinder of radius 7 cm and height 14 cm? [Take π = 3.] => 16 : 1 or 22 : 1 or 21 : 1 or 24 : 1..