Chlorine has two isotopes, viz. Cl-35 and Cl-37 Their atomic masses are 35 and 37. Their chemical properties are same. Where should these be placed in Mendeleev's periodic table? In different places or in the same place?

Define atomic mass. Chlorine has two stable isotopes , Cl-35 and Cl-37 with atomic masses 34.968u and 36.956u respectively . If the average atomic mass is 35.453u , calculate the percentage abundance.

Fluorine, Chlorine, bromine and iodine are placed in the same group (17) the periodic table, because

The convex surface of a thin concavo-convex lens of glass of refractive index 1.5 has radius of curvature 10 cm. The concave surface has a radius of curvature 30 cm. The convex side is silvered and placed on a horizontal surface. Then where should a pin be placed on the optic axis such that its image is formed at the same place?

Boron has two stable isotopes, .^(10)B (19%) and .^(11)B (81%). The atomic mass that should appear for boron in the periodic table is ___________.

How did the position of frac(35)(17)Cl and frac(37)(17)Cl get fixed in the Modern periodic table?

Two bullets are fired simultaneously horizontally and with different speeds from the same place. Which bullet will hit the ground first?

Questions based on paragraph Study the following activity and answer the questions. Take two aluminium channels of different lengths. Place the lower ends of the channels on the floor and hold their upper ends at the same height. Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance. Why do the balls cover the same distance on rolling down?

Questions based on paragraph Study the following activity and answer the questions. Take two aluminium channels of different lengths. Place the lower ends of the channels on the floor and hold their upper ends at the same height. Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance. As the balls roll down which energy is converted into which other form of energy?

Questions based on paragraph Study the following activity and answer the questions. Take two aluminium channels of different lengths. Place the lower ends of the channels on the floor and hold their upper ends at the same height. Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance. What is the form of the eventual total energy of the balls?

Questions based on paragraph Study the following activity and answer the questions. Take two aluminium channels of different lengths. Place the lower ends of the channels on the floor and hold their upper ends at the same height. Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance. Which law related to energy does the above activity demonstrate? Explain.