अथवा
परमाणु क्रमांक 15,21,25,36,के इलेक्ट्रानिक विन्यास लिखिए।
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Number - Element - Electron Configuration
15 Phosphorus [Ne] 3s2 3p3
21 Scandium (Sc) [Ar] 3d1 4s2
25 Manganese (Mn) [Ar] 3d5 4s2
26 Iron (Fe) [Ar] 3d6 4s2
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