Question

calculate the effective nuclear charge of Berrilium​

Answer 1

Answer:

1.95

Explanation:

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Answer 2

Answer:

The effective nuclear charge (often symbolized as ${\displaystyle Z_{\mathrm {eff} }} or {\displaystyle Z^{\ast }}$ is the net positive charge experienced by an electron in a polyelectronic atom. The term "effective" is used because the shielding effect of negatively charged electrons prevents higher orbital electrons form experiencing the full nuclear charge of the nucleus due to the repelling effect of inner-layer electrons. The effective nuclear charge experienced by the electron is also called the core charge.

The Effective nuclear charge is the net charge an electron experiences in an atom with multiple electrons. The effective nuclear charge may be approximated by the equation: Z eff = Z - S Where Z is the atomic number and S is the number of shielding electrons.

Explanation:

Effective nuclear charge in beryllium is $\sf{2}^{+}$

Protons in Beryllium = 4

Inner shell electrons = 2

$\sf{Effective \:Nuclear \:Charge=}$$\sf{Protons\: - \:Inner \:Shell \:Electrons}$

$\sf{Effective \:Nuclear \:Charge \: = \:4 \:- \:2}$

[tex]\sf{=2 }[/tex]