What are isotopes ?

What are histones? What are their functions?

What is Arthritis? What are its types?

How are isotopes of different elements placed in the Modern peridic Table?

Hydrogen has three isotopes, the number of possible diatomic molecules will be

Answer the following questions in one sentence each : Name isotopes of hydrogen.

Atomic mass of thorium is 232 and 1 ts atomic number 90.The number of a particle and beta particles which will be lost so that an isotope of lead (atomic mass 208 and atomic number 82) is produced is

In a periodic table the average atomic mass of magnesium is given as 24.312u . The average value is based on their relative natural abundance on earth. The three isotopes and their masses are "_12 ^24 Mg (23.98504u) , "_12 ^25 Mg(24.98584u) and "_12 ^26 Mg (25.98259u) . The natural abundance of "_12 ^24 Mg is 78.99% by mass . Calculate the abundance of the other two isotopes.

What is the abundance of isotopes ?

Write the names of isotopes of hydrogen. What is the mass ratio of these isotopes?