The ratio of number of pentagons in `C_(60)` and trigons (triangles) in white phosphorus,is______.

No . Of pentagons in C_(60) and Triangles in white Phosphorus are :

No . Of pentagons in C_(60) and Triangles in white Phosphorus are :

The number of neutrons in ''^12C is______.

The number of C - C linkages in C_(60) (Fullerene) is

The ratio of the number of sides of a square to the number of sides of a triangle is

The angles of a triangle are in AP and the ratio of the number of degrees in the least to the number of radians in the greatest is 60:pi . Find the angles in degree and radians.

The angles of a triangle are in A.P. and the ratio of number of degree in the least angle to the number of radian in the greatest angle is 60 :pi . Find the angles in degree.