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- Dictionaryradius/ˈreɪdɪəs/
noun
- 1. a straight line from the centre to the circumference of a circle or sphere.
- 2. the thicker and shorter of the two bones in the human forearm.
verb
- 1. give a rounded form to (a corner or edge): "Brian carefully radiused all the sharp edges and corners"
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1) Covalent Radius. Covalent radius is one half the distance between the nuclei of two covalently bonded atoms of the same element in a molecule. Therefore, r covalent = ½ (internuclear distance between two bonded atoms). The internuclear distance between two bonded atoms is called the bond length. Therefore,
Radius of Gyration. As a measure of the way in which the mass of a rotating rigid body is distributed with respect to the axis of rotation, we define a new parameter known as the radius of gyration. It is related to the moment of inertia and the total mass of the body. Notice that we can write I = Mk 2 where k has the dimension of length.
Formula of the Radius of Curvature. Normally the formula of curvature is as: R = 1 / K’. Here K is the curvature. Also, at a given point R is the radius of the osculating circle (An imaginary circle that we draw to know the radius of curvature). Besides, we can sometimes use symbol ρ (rho) in place of R for the denotation of a radius of ...
The radius of gyration or gyradius of a body is always about an axis of rotation. It is characterized as the spiral distance to a point which would have a moment of inertia. The radius of gyration is a geometric property of a rigid body. For example, the centre of mass. It is equivalent to the body’s real dissemination of mass.
Examples of Radius Ratio Rule. The ratio of radii of the ions can affect the arrangement of ions in a crystal. Moreover, the limiting ratio has to be greater than 0.414, (radius ratio greater than 0.414) to fit an octahedral arrangement of anions. In this formation, cations will be able to accommodate 6 anions.
Solution. Verified by Toppr. The ionic radius is the measure of an atom's ion in a crystal lattice. It is half the distance between two ions that are barely touching each other. Since the boundary of the electron shell of an atom is somewhat fuzzy, the ions are often treated as though they were solid spheres fixed in a lattice.
Van Der Waal's radius is one half of the distance between the nuclei of two non bonded adjacent atoms belonging to two neighboring molecules of an elements in the solid state. Was this answer helpful? 34.
Whereas these symbols are infrequent and we can use them as they can be easily mistaken for a degree symbol (°), or radius (r). For example, a value of 1.2 radians is capable of writing as 1.2 rad, 1.2 r, 1.2rad, 1.2R or 1.2C. As a ratio of the 2 lengths, a radian is a pure number that requires no unit symbol.
(a) If the image formed by a mirror for all positions of the object placed in front of it is always diminished, erect and virtual, name the type of the mirror used and also draw a ray diagram to justify your answer.
(a) Radius of curvature (R) of a spherical mirror is defined as the radius of an imaginary hollow sphere of which the mirror is a part. (b) Focal length (f) of a spherical mirror is the distance of the point from the pole at which all the rays parallel to the principal axis are converged after reflection.
