A sample of rock from the moon was found to contain the elements X and Y in 1:7 ratio by mole. Element is radioactive it decays to Y with half life of `6.93 xx 10^(9)` years
`X to Y`
`t_(1//2) = 6.93 xx 10^(9)` yrs
What is the age of the rock?

A radioactive isotope X with half-life of 693xx10^(9) years decay to Y which is stable. A sample of rock from of the moon was found to contain both the elements X Y in the mole ratio 1:7 . What is the age of the rock ? a) 2.079xx10^(12) years b) 1.94xx10^(10) years c) 1.33xx10^(9) years d) 10^(10) years

At radioactive equilibrium, the ratio between two atoms of radioactive elements A and B is 3.1 xx 10^(9) : 1 . If the half-life period of A is 2 xx 10^(10) years, what is the half-life of B ?

At radioactive equilibrium, the ratio between two atoms of radioactive elements A and B is 3.1 xx 10^(9) : 1 . If the half-life period of A is 2 xx 10^(10) years, what is the half-life of B ?

The radioactive isotope X with a half-life of 10^(9) decays to Y which is stable. A sample of rocks was found to contain both the elements X and Y in the years ratio 1: 7 . If initially, the quantity of Y in the rock was zero, then the age of the rocks is

A sample of rock from moon contains atoms of uranium and lead in the ration 1:3. Then age of rock will be (t_(1//2)"for uranium"=4xx10^(10)years) :

A radioactive isotope X with half-life 1.5xx10^(9) yr decays into a stable nucleus Y .A rock sample contains both elements X and Y in the ratio 1 : 15. They age of the rock is

A radioactive isotope X with half-life 1.5xx10^(9) yr decays into a stable nucleus Y .A rock sample contains both elements X and Y in the ratio 1 : 15. They age of the rock is

A radioactive isotope X with half-life 1.5xx10^9 y decays into a stable nucleus Y. A rock sample contains both elements X and Y in ratio 1:15. Find the age of the rock .

A radioisotope Y with half-life 1.4xx10^9 years decays to X which is stable. A sample of the rock from a cave was found to contain X and Y in the ratio 1:7 . The age of the rock is - (A) 1.96 × 10^9 years. (B) 3.92 × 10^9 years. (C) 4.20 × 10^9 years. (D) 8.40 × 10^9 years.