How Many of the Following Electron Configurations for the Species

question 84

Multiple Choice

How many of the following electron configurations for the species in their ground state are correct?
(I) Ca: 1s²2s²2p⁶3s²3p⁶4s²
(II) Mg: 1s²2s²2p⁶3s¹
(III) V: [Ar] 3s²3d³
(IV) As: [Ar] 4s²3d¹⁰4p³
(V) P: 1s²2s²2p⁶3p⁵

• A) 1
• B) 2
• C) 3
• D) 4
• E) 5

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