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Q: What is the atomic number of chromium?
  • A. 19
  • B. 24
  • C. 21
  • D. 18
Correct Answer: Option B - Chromium is a transition metal element having atomic number 24. Chromium has electronic configuration [Ar] 3d⁵4s¹.
B. Chromium is a transition metal element having atomic number 24. Chromium has electronic configuration [Ar] 3d⁵4s¹.

Explanations:

Chromium is a transition metal element having atomic number 24. Chromium has electronic configuration [Ar] 3d⁵4s¹.