1. Tardigrade
  2. Question
  3. Chemistry
  4. In the ground state, an element has 13 electrons in its ''M shell''. The element is

Q. In the ground state, an element has 13 electrons in its ''M shell''. The element is

 3551  175 EAMCETEAMCET 2001The d-and f-Block Elements Report Error

Solution:

Electrons in M shell (or 3rd shell) = 13
Configuration of M shell :
Therefore, the element can be either Cr(Z = 24)
or Mn (Z = 25). As Mn is not one of the options given, Cr is the correct answer.