Home
Class 9
CHEMISTRY
An ion having a mass number 52 has 3 uni...

An ion having a mass number 52 has 3 units of positive charge. The number of neutrons in the ion exceeds the number of electrons in it by 7. The atomic number of the element is

A

28

B

22

C

26

D

24

Text Solution

Verified by Experts

The correct Answer is:
D
Let number of protons be x.
Number of electrons = x-3
` therefore ` Number of neutrons = x-3 + 7 = x + 4
mass number = Number of protons + Number of neutrons
` x+x+ 4=52 , 2 x +4 =52`
` 2x =52 -4 ,x=(48 )/(2 ) =24`
Atomic number = Number of protons (x) = 24
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • STRUCTURE OF THE ATOM

    MTG IIT JEE FOUNDATION|Exercise EXERCISE (INTEGER / NUMERICAL VALUE TYPE)|5 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS

    MTG IIT JEE FOUNDATION|Exercise EXERCISE (INTEGER/NUMERICAL VALUE)|4 Videos

Similar Questions

Explore conceptually related problems

An ion X^(2-) contains 10 electrons and 8 neutrons. The atomic number of the element X is

An ion with mass number 56 contains 3 units of positive charge and 30.4% more neutrons then electrons. Assign the symbol to this ion.

Knowledge Check

  • The mass number of an ion is 48. It has 3 units of positive charge. The number of neutrons in the ion exceeds the number of electrons in it by 7. The atomic number of the element is

    A
    21
    B
    22
    C
    24
    D
    26

  • If the number of electrons in an ion Z^(3-) is 10 , the atomic number of element Z will be :

    A
    `7`
    B
    `5`
    C
    `10`
    D
    `8`

  • The ion of an element has 3 positive charge, 27 mass number and 14 neutrons. Find the number of electrons in this ion.

    A
    13
    B
    10
    C
    14
    D
    16

    • Similar Questions

    Explore conceptually related problems

    An ion with mass number 56 contains 3 units of positive charge and 30.4 % more neutrons than electrons. Assign the symbol to this ion

    If the number of electrons in an ion is 10 and the number of protons is 9, then What would be the atomic number of the ion?

    If the number of electrons in an ion is 10 and the number of protons is 9, then what would be the atomic number of the ion?

    The number of neutrons in dipositive zinc ion with mass number 70 is :

    The number of neutrons in dipositive zinc ion with mass number 70 is.

    Home
    Profile