Home
Class 9
CHEMISTRY
Study the given mass spectrum of magnesi...

Study the given mass spectrum of magnesium carefully.

The number of protons in `""^(25)Mg`, and the relative atomic mass of Mg are respectively

A

12 , 13 and 25

B

16 , 12 and 24.32

C

14,13 and 25

D

12, 13 and 24.32

Text Solution

Verified by Experts

The correct Answer is:
D
No. of protons in `""_(26) Mg = 12`
No. of neutrons in `""_(25)Mg = 13`
Relative atomic mass of `Mg = ((24 xx 78.99) + (25 xx 10) + (26 xx 11.01))/(100)`
` =(1895.76 + 250 + 286.26)/(100) = 24.32`
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION (HOTS)|5 Videos

  • NSO QUESTION PAPER 2020 SET 1

    SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION|1 Videos

Similar Questions

Explore conceptually related problems

The number of protons in an atom of atomic number Z and mass number A is

Atomic number and mass number of an element M are 25 and 52 respectively. The number of electrons, protons and neutrons in M^(+2) ion are respectively.

If ""^12C is used as standard , the relative mass of an atom of sodium is 23 and the relative mass of an atom of phosphorus is 31 . Find the relative masses of a samples of sodium and phosphorus with respect to each other when each contains 3.0 xx 10^(25) atoms .

In magnesium sulphide, the ratio by mass of Mg and S is 3:4. What is the ratio of number of Mg and S atoms?