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Which of the following species having same value of `sigma^(**)` (Screening constant) for 2s electrons?A. FB. NaC. ClD. Zn

Answer» Correct Answer - BCD
`{:(F =1s^(2)2s^(2) 2p^(5),,,sigma^(**)=(7-1)xx0.35+2xx0.85),(Na=1s^(2)2s^(2)2p^(6)3s^(1),,,sigma^(**) =(8-1)xx0.35+2xx0.85),(Cl=1s^(2)2s^(2)2p^(6)3s^(2)3p^(6),,,sigma^(**)=(8-1)xx0.35+2xx0.85),(Zn=1s^(2)2s^(2)2p^(6) 3s^(2)3p^(6) 4s^(2)3d^(10),,,sigma^(**)=(8-1)xx0.35+2xx0.85):}`


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