Question

Calculate the effective nuclear charge on a valence electron in a sulfur atom.

Answer 1

Answer:

Hello mate

Explanation:

The effective nuclear charge is the net positive charge experienced by valence electrons. It can be approximated by the equation: Zeff = Z – S, where Z is the atomic number and S is the number of shielding electrons.

Answer 2

Given: Sulfur atom

To find: The effective nuclear charge in a valence electron in a sulfur atom.

Solution:

Nuclear charge is defined as the total charge that is carried by the nucleus of the atom.

The effective nuclear charge is the total charge of the electrons and the charge carried by the nucleus of the atom and is denoted by $Z_e_f_f$.

To calculate the effective nuclear charge the formula is,

$Z_e_f_f=Z-$ σ

where, σ is the shielding effect of the atom.

The electronic configuration of sulfur is,

$1s^22s^22p^63s^23p^4$

To know about the shielding effect we need to know the number of electrons that have the principal quantum number less than the valence shell.

Here σ is $10$ (not taking into consideration the electrons in the shell of quantum number 3)

The nuclear charge is $=16$

∴ The effective nuclear charge

$Z_e_f_f=Z-$σ

⇒ $Z_e_f_f=16-10$

⇒$Z_e_f_f=+6$

Final answer:

The effective nuclear charge on a valence electron of sulfur is +6.