Please wait...
Contact Us
Contact
Need assistance? Contact us on below numbers

For Enquiry

10:00 AM to 7:00 PM IST all days.

Business Inquiry (North)

Business Inquiry (West / East / South)

OR

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this number

022-62211530

Mon to Sat - 10 AM to 7 PM

The ratio of radioactive and non radioactive form of an element in sample of rock is 1:7.Estimate the age of rock if the half life of radioactive element is 3.1 billion years. 1-3.1billion years, 2-9.3billion years 

Asked by Priyanka 12th November 2017, 1:16 PM
Answered by Expert
Answer:

It is possible to determine the age of rocks by the method of radioactive dating.

Given:

The half life (t ½) of the radioactive element = 3.1 billion years.

This means that if we begin with a pure sample of the element, we know that in 3.1 billion years, half of the element will have decayed to another isotope.

Now, the ratio of radioactive and non-radioactive element = 1:7

This means that subsequent decays have reduced the radioactive element to non-radioactive element and now, the ratio is 1:7

After 1 half life (3.1 billion years) =1/2 remains

After 2 half lives (6.2 billion years) = 1/4 remains

After 3 half lives (9.3 billion years) = 1/8 remains

The given ratio is 1: 7.

So, approximately after 3 half lives, the age of the rock would be 9.3 billion years.

Answered by Expert 13th November 2017, 11:46 AM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Free related questions

31st October 2017, 5:59 PM

Latest Questions

CBSE X Science
Asked by bhavanisalunkhe33 26th February 2020, 12:18 PM
CBSE VII Geography
Asked by mpathak60 26th February 2020, 12:14 PM
CBSE XI Science Physics Motion in a Straight Line
Asked by ranjanvvn 26th February 2020, 12:11 PM

Chat with us on WhatsApp