Home
Class 9
CHEMISTRY
A sample of an element X contains two is...

A sample of an element X contains two isotopes `._(8)^(16)X and ._(8)^(18)X`. If the average atomic mass of this sample of the element be 16.2 u, calculate the percentage of the two isotopes in this sample.

Text Solution

Verified by Experts

`""_(8)^(16)A=90%, ""_(8)^(18)A=10%`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ATOMIC STRUCTURE

    BHARATI BHAWAN (ENGLISH)|Exercise A. Objective Questions (I. Match )|2 Videos

  • ATOMIC STRUCTURE

    BHARATI BHAWAN (ENGLISH)|Exercise II. Fill in the blanks|7 Videos

  • ATOMIC STRUCTURE

    BHARATI BHAWAN (ENGLISH)|Exercise Long-Answer Questions|12 Videos

  • ATOMS , MOLECULES AND IONS

    BHARATI BHAWAN (ENGLISH)|Exercise Numericals|16 Videos

Similar Questions

Explore conceptually related problems

(a) What are radioactive isotopes ? Give two examples of radioactive isotopes (b) Give any two uses of ratioactive isotopes (c) An element Z contains two naturally occuring isotopes ._(17)^(35) Z and ._(17)^(37)Z . If the average atomic mass of this element be 35.5 u, calculate the percentage of two isotopes.

The average atomic mass of sample of an element X is 16.2 u. What are the percentages of isotopes ""_(8)^(16)X and ""_(8)^(16)X in the sample?

Knowledge Check

  • A sample of oxygen atoms contain only ._(8)O^(16) and ._(8)O^(18) isotopes. If the average atomic mass of the sample is 16.8, then identify the options which is/are correct ?

    A
    mass % of `O^(16)` is less then 60 %
    B
    mole % of `O^(18)` is 40%
    C
    average number of neutron/atom is equal to 8.8
    D
    average number of neutron/proton is equal to 1.1

  • An element A exist in two isotopic forms A^15 and A^16 . If the average atomic mass of A was found to be 15.24, then the % relative abundance of A^15 will be

    A
    0.1
    B
    0.2
    C
    0.4
    D
    0.76

  • boron has two isotopes B-10,B-11. The average atomic mass of boron is found to be 10.80u. Calculate the percentage abundance of B^(10) isotope :-

    A
    80
    B
    20
    C
    25
    D
    75

    • Similar Questions

    Explore conceptually related problems

    Boron has two isotopes, B-10 and B-11. The average atomic mass of boron is found to be 10.80u. Calculate the percentage of abundance of these isotopes.

    An element exist in nature in two isotopic forms: X^(30)(90%) and X^(32)(10%) . What is the average atomic mass of element?

    The average atimic mass of two isopoes with mass numbers A and A+2 is A+0.25 . Calculate the percentage abundance of the isotopes.

    An element is found in nature in two isotopic forms with mass numbers (A-1) and (A+3). If the average atomic mass of the element is found to be A, then the relative abundance of the heavier isotope in the nature will be :

    The average atomic mass of an element A is 16.2 u. There are two isotopes ""_(8)^(16) A and ""_(8)^(18)A of an element. What will be the percentage of these two isotopes in element A ?

    Home
    Profile