Question

What is Zeff? How to Calculate Zeff for sulphur
?

Answer 1

Answer:

Zeff of sulphur is 5.45.

Zeff

• Zeff is effective nuclear charge.
• It is a net attraction force which is acting on the electrons of outermost shell by nucleus.
• For monoelectron species such as H, He+ , Li2+ , etc the value of screening will be zero.

SCREENING EFFECT

• It is a net repulsive force due to electrons present in an atom acting on any electron of outermost shell or test electron.

Here,

n is the outermost shell.

z is the nuclear charge or atomic number.

Zeff is effective nuclear charge.