How do electronic configurations of elements change in second period of periodic table with increase in atomic numbers?
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Answer:
I explain cu²⁹
Explanation:
cu²⁹ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d¹⁰
because d block want always fulfill / half fill
such as ,
Cr²⁴= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵
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