radius ratio rules

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..

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..

The radius of the cylinder is equal to the radius of the sphere in the figure. What is the ratio of the surface area of the sphere to the surface area of the cylinder? => 2 : 5 or 1 : 2 or 1 : 4 or 1 : 3..

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.? => 1 : 5 or 1 : 4 or 4 : 1 or 3 : 2..

. 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..

A race track is in the form of a ring. The ratio of inner radius to the outer radius is 3 : 5. If the area of the outer circle is 100 m 2 , then find the area of the track. => 64 m 2 or 36 m 2 or 136 m 2 or 100 m 2..

> Again from the right angled triangle ABD body diagonal But as shaded sphere touches other spheres evidently body diagonal AD = 2(R + r) Dividing equation (ii) by equation (i) we g..

Which of the following rules expresses the area of a circle (A) as a function of radius ( r )? => A = p × r 2 or A = p × r 3 or A = p × r or A = r..

Find the ratio of the total surface area of a hemisphere to its volume. Let r be the radius of the sphere. => 1 2r or 2 r or 9 2r or 3 2r..