1. Tardigrade
  2. Question
  3. Chemistry
  4. An element M has an atomic mass 19 and atomic number 9. Its ion is represented by

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Q. An element $M$ has an atomic mass $19$ and atomic number $9$. Its ion is represented by

Classification of Elements and Periodicity in Properties

Solution:

$M^{-}$ After gaining an $e^{-}$ the metal attains stable configuration