filter
  • Subject:

    ...

  • Topic:

    ...

An element, X has the following isotopic composition:

200X : 90%, 199X : 8.0%, 202X : 2.0%

The weighted average atomic mass of the naturally occurring element X is closest to 

(a) 201 u

(b) 202 u

(c) 199 u

(d) 200 u