rules of ratio

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..

. He first ensured that he had pure-bred tall and pure-bred short plants by selecting seeds from plants that had been self-pollinating for many generations. (Self-pollination is ensured by keeping the flower covered with plastic till seed formation). He selected one tall and one short plant from th..

Expression for the equilibrium constant of a reaction is written in the form of a ratio. The numerator consists of the molar concentration (or partial pressure) terms of the products each raised to a power equal to its stoichiometric coefficient in the balanced chemical equation, and th..

Introduction - When calculating sides or angles of right angled triangles, it is easiest to use the appropriate trigonometric relation. Finding the value of trigonometric ratios from the tables is learnt easily. Nowadays of course calculators are able to give accurate values for any degre..

Introduction - When calculating sides or angles of right angled triangles, it is easiest to use the appropriate trigonometric relation. Finding the value of trigonometric ratios from the tables is learnt easily. Nowadays of course calculators are able to give accurate values for any degre..

.5 kcal/mol more stable than ethylene (H h y d r o g = 30.3). Further, increasing the degree of substitution leads to further stability, and as a general rule alkenes follow this stability order:Tetrasubstituted>Trisubstituted>Disubstituted>Monosubstitut..

The following rules helps in evaluating t-ratios of the angles: The positive and negative sign of t-ratios of belo..

(c) Cathode rays get deflected in the magnetic field. Figure (c) above shows a beam of cathode rays being deflected by the magnetic field. By applying 'Flemings left hand rule' we can also prove that they are negatively charged particles. Cathode rays travel with a great velocity nearly o..

(i) Let X be a set of numbers and f : N n X be a function, then the ordered set {f(1), f(2),...., f(n)} is called a finite sequence in X. (ii) Let X be a set of numbers and f : N X be a function, then the ordered set {f(1), f(2),....} is called an infinite sequence in X. ..