1.

  The atomic number of bromine is 35 and its atomic weight is 79. Two isotopes of bromine are present in equal amounts. Which of the following statements represents the correct number of neutrons [NCERT 1983]                

A.                 First isotope 34                 Second isotope 36
B.                 First isotope 44                 Second isotope 46
C.                 First isotope 45                 Second isotope 47
D.                 First isotope 79                 Second isotope 81
Answer» C.                 First isotope 45                 Second isotope 47


Discussion

No Comment Found

Related MCQs