Identify the incorrect statement/s. A. The maximum number of electrons that can be accommodated in an atom, in which the largest Principal quantum number value is 4 , is 54 . B. According to Rydberg, all series of lines in Hydrogen spectrum can be described by the equation: 1 =109677 ( 1 n₁^2 - 1 n₂^2 ) cm ⁻¹ where (n₁

Options

1. AOnly A
2. BNeither A nor B
3. CBoth A and B
4. DOnly B

Correct answer

A. Only A

Step-by-step solution

For statement A, the maximum number of electrons in an atom with principal quantum number n=4 is determined by the total number of orbitals available. The orbitals are 1s, 2s, 2p, 3s, 3p, 3d, 4s, 4p, 4d, 4f . The number of orbitals is 1 + 1 + 3 + 1 + 3 + 5 + 1 + 3 + 5 + 7 = 30 . Each orbital can hold 2 electrons, so the maximum capacity is 30 2 = 60 electrons. Thus, statement A is incorrect. For statement B, the Rydberg formula for the hydrogen spectrum is given by 1 = R_H ( 1 n₁^2 - 1 n₂^2 ) , where R_H 109677 cm

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