The ratio of the nuclear radii of the gold isotope `._79^197Au` and silver isotope `._47^107Ag` is

Obtain approximately the ratio of the nuclear radii of the gold isotope [ (^197_79) Au ] and the silver isotope [ (^107_47) Ag ]

If the average atomic mass of an element having two isotopes is 71, the ratio of the natural abundance of the two isotopes of mass 70 and 74 will be

Name the oxide of isotope of hydrogen used in nuclear reactor

Fill in the blank The ratio of gram atoms of Au and Cu in 22ct gold is____

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

The same quantity of electricity that liberates 4.316 g of silver from AgNO_(3) solution was passed through a solution of gold salt. If the atomic weight of gold be 197 and its valency in the above-mentioned salt be 3, calculate the weight of gold deposited at the cathode and the quantity of electricity passed.

In nuclear reactors, heavy water is used as 'moderator'. What is a moderator and which isotope of hydrogen is present in it?

Boron' occurs in nature in the form of two isotopes '_5^(11)B' and '_5^(10)B' in ratio of 81 and 19 respectively. Calculate its average atomic máss.