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Ca, V, Co, Zn, As Gaseous atoms of which of these elements are paramagnetic? (A) Ca and As only (B) Zn and As only (C) Ca, V, and Co only (D) V, Co, and As only (E) V, Co, and Zn only

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ans is (D) V, Co, and As only Ca: 4s2 (all electrons are paired, NOT paramagnetic) V: 4s2 3d3 (the 3 d electrons are unpaired, PARAMAGNETIC) Co: 4s2 3d7 (3 of the d electrons are unpaired, PARAMAGNETIC) Zn: 4s2 3d10 (all electrons are paired, NOT paramagnetic) As: 4s2 3d10 4p3 (the 3...
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ans is (D) V, Co, and As only Ca: [Ar] 4s2 (all electrons are paired, NOT paramagnetic) V: [Ar] 4s2 3d3 (the 3 d electrons are unpaired, PARAMAGNETIC) Co: [Ar] 4s2 3d7 (3 of the d electrons are unpaired, PARAMAGNETIC) Zn: [Ar] 4s2 3d10 (all electrons are paired, NOT paramagnetic) As: [Ar] 4s2 3d10 4p3 (the 3 p electrons are unpaired, PARAMAGNETIC) read less
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(D) V,Co,AND As ONLY
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