1. The outer electronic configuration of the ground state chromium atom is 3d44s². (JEE 1982)
False
Chromium atomic number is 24.
Its our electronic configuration is 3d54s2 .
2. The energy of the electron in the 3d-orbital is less than that in the 4s-orbital in the hydrogen atom. (JEE 1983)
Ans: True. (Think what is the explanation)
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