UncategorizedIn a triad of ‘A’, ‘B’, ‘C’ elements is the atomic mass of ‘B’ and ‘C’ are 150 and 200 respectively. One atomic mass of ‘A’ is                             

In a triad of 'A', 'B', 'C' elements is the atomic mass of 'B' and 'C' are 150 and 200 respectively. One atomic mass of 'A' is                             

  1. A
    100
  2. B
    125
  3. C
    250
  4. D
    350

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    Solution:

    A - ?

    B – 150

    C – 200

    Arithmetic Mean A+C2=B

    A+2002=150

    A+200=300

    A=300-200

    A=100

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