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ChemistryChemistry
9 August, 03:23

The shielding of electrons gives rise to an effective nuclear charge, Zeff, which explains why boron is larger than oxygen. Estimate the approximate Zeff felt by a valence electron of boron and oxygen, respectively?

A. + 5 and + 8

B. + 3 and + 6

C. + 5 and + 6

D. + 3 and + 8

E. + 1 and + 4

+2
Answers (1)
  1. 9 August, 04:03
    0
    Option B. + 3 and + 6

    Explanation:

    Zeff = z - s

    where z is the atomic number, s is the number of shielding (non-valence) electrons

    For Boron, electronic configuration is 1s²2s³.

    z = 5, s = 2

    Zeff = 5 - 2 = + 3

    For Oxygen, electronic configuration is 1s²2s²2p⁴

    z = 8, s = 2

    Zeff = 8 - 2 = + 6
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Home » Chemistry » The shielding of electrons gives rise to an effective nuclear charge, Zeff, which explains why boron is larger than oxygen. Estimate the approximate Zeff felt by a valence electron of boron and oxygen, respectively? A. + 5 and + 8 B. + 3 and + 6 C.
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