Question

How to calculate effective nuclear charge of lithium positive?

Answer 1

The calculation for effective nuclear charge is Zeff = Z - S. Zeff is the effective charge, Z is the atomic number, and S is the charge value from Slater's Rules.

Answer 2

In the example using a lithium atom, Z equals 3 (the atomic number of lithium) and S equals 1.7. By changing the variables in the formula to the correct values for the example, it becomes Zeff = 3 - 1.7. The value of Zeff (and thus the effective nuclear charge of the 2s electron in a lithium atom) is 1.3