engineering chemistry MCQ #961

engineering chemistry MCQ #961

1. Question 1

   Q1. The electron configuration of chromium is

   • A) [Ar] 3d4 4s2
   • B) [Ar] 3d5 4s1
   • C) [Ar] 3d6 4s0
   • D) [Ar] 3d3 4s2

   Answer: [Ar] 3d5 4s1

   Explanation: The electron configuration of chromium is [Ar] 3d5 4s1, which is a stable half-filled d-subshell configuration.