1.

21.Element X (At no.12) has three Isotopes.The table gives mass numbers of each isotope and its percentage abundance in a sampleof element X.Mass Number 24 25 26Percentage Abundance (%)79 10 11Calculate the relative atomic mass of element X.​

Answer»

Answer:

u1= 24

% of u1=79%

u2= 25

% of u2= 10%

u3= 26

% of u3= 11%

relative ATOMIC mass= ( u1×%+ u2×%+ u3×%)

= 24×79/100+ 25×10/100+ 26×11/100

=18.96+2.5+2.86

=24.32 u



Discussion

No Comment Found

Related InterviewSolutions