Which of the Following Statements Concerning Ground State Electron Configurations

question 63

Multiple Choice

Which of the following statements concerning ground state electron configurations is/are CORRECT?
1) For a hydrogen atom with one electron,the 2s and 2p orbitals have identical energies.
2) For a lithium atom with three electrons,the 2s and 2p orbitals have different energies.
3) The effective nuclear charge felt by an electron in a 2p orbital is greater for a carbon atom than for a boron atom.

• A) 1 only
• B) 2 only
• C) 3 only
• D) 2 and 3
• E) 1,2,and 3

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