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Indicate the number of unpaired electron...

Indicate the number of unpaired electrons in:
a. `P, b. Si, c. Cr`,
d. `Fe, e. Kr`

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To determine the number of unpaired electrons in the given elements (Phosphorus, Silicon, Chromium, Iron, and Krypton), we will analyze their electronic configurations step by step. ### Step 1: Phosphorus (P) - **Atomic Number**: 15 - **Electronic Configuration**: 1s² 2s² 2p⁶ 3s² 3p³ - **Analysis**: - The 3p subshell has 3 electrons. - The electron configuration of the p subshell can be represented as: ↑ ↑ ↑ (where each arrow represents an unpaired electron). ...
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