AIEEE Exam

Electronic configuration
1s2 2s2 3s2 3p6 4s1 represents
(A) Ground state
(B) Excited state
(C) Anionic state
(D) Cationic state

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AIEEE Other Question

The mass of carbon anode consumed (giving
only carbon dioxide) in the production of 270 kg
of aluminium metal from bauxite by the Hall
process is : (Atomic mass : Al = 27)
(A) 90 kg (B) 540 kg
(C) 180 kg (D) 270 kg In Bohr series of lines of hydrogen spectrum, the
third line from the red end corresponds to which
one of the following inter-orbit jumps of the
electron for Bohr orbits in an atom of hydrogen?
(A) 5 → 2 (B) 4 → 1
(C) 2 → 5 (D) 3 → 2