Chlorine has two isotopes `"_17^35Cl` And `"_17^37Cl` in the ratio `3:1`. Calculate the average atomic mass of chorine.

If bromine atom is in the form of say isotopes "_35^79Br (49.7%) and "_35^81Br (50.3%) then calculate the average mass of bromine atom.

The relative abundance of various isotopes of silicon is as:Si-28=92.23%,Si-29=4.67% and Si-30=3.10%. Calculate the average atomic mass of silicon.

Carbon occurs in nature in the form of two isotopes with atomic mass 12 and 13 respectively. If average atomic mass of carbon is 12.011 u , what is the % abundance of the two isotopes ?

Nitrogen occurs in nature in the form of two isotopes with atomic mass 14 and 15 respectively. If average atomic mass of nitrogen is 14.0067, what is the % abundance of the two isotopes ?

In the chemical analysis of a rock the mass ratio of two radioactive isotopes is found to be 100:1. The mean lives of the two isotopes are 4xx10^9 years and 2xx10^9 years, respectively. If it is assumed that at the time of formation the atoms of both the isotopes were in equal propotional, calculate the age of the rock. Ratio of the atomic weights of the two isotopes is 1.02:1.

Boron has two stable isotopes, "_5^10B and "_5^11B . Their respective masses are 10.01294 u and 11.00931 u, and the atomic mass of boron is 10.811 u. Find the abundances of "_5^10B and "_5^11B .

Boron has two stable isotopes "_5^10B and "_5^11B . There respective masses are 10.01294 u and 11.00931 u and the atomic mass of boron is 10.811 u. Find the abundances of "_5^10B and "_5^11B .

An element E crystallizes in boyd centred cubic structure. If the edge lengh of the cell is 1.469xx10^-10m and the denstiy is 19.3 g cm^-3 , calculate the atomic mass of this element. Also calculate the radius of an atom of the element.