The atomic radii of Cl, I and Br are 99, 133 and 114 pm, respectively.

The atomic radii of Na, K and Mg are 186, 227 and 160 pm, respectively. Explain the differences.

The ionic radii of F^Theta and Na^o+ are 133 and 98 pm, respectively.

Determine the density of cesium chloride which crystallizes in a bcc type structure with the edge length 412.1 pm. The atomic masses of Cs and CI are 133 and 35.5 respectively.

50% of the reagent is used for dehydrohalogenation of 6.45 g CH_(3)CH_(2)Cl . What will be the weight of the main product obtained ? [Atomic mass of H , C and Cl are 1 ,12 and 35.5 g/mol respectively]

In A^(+)B^(-) ions compound, radii of A^(+) and B^(-) ions are 180 pm and 187 pm respectively. The crystal structure of this compound will be

The radii of ends of a frustum are 14 cm and 6 cm respectively and its height is 6 cm. Find its (i) curved surface area

Two loops P and Q are made from a uniform wire. The radii of P and Q are r_1 and r_2 respectively and their moments of inertia are I_1 and I_2 respectively. If I_1//I_2 = 4 , then r_2//r_1 equals

The radii of ends of a frustum are 14 cm and 6 cm respectively and its height is 6 cm. Find its (i) curved surfaces area (ii) total surface area.

In the given figure , (i) the radii of the circles with centres A and B are 3cm and 4cm respectively. (ii) the radii of the circles with centres A and B are 4cm and 3cm respectively. Find (i) d(A,B) in figure (a) (ii) d(A,B) in figure (b)