Question

What is the effective nuclear charge of potassium?
O +8
O +6
O +1
O +2

Answer 1

The effective nuclear charge of potassium is +1.

Step-by-step explanation:

The effective nuclear charge of potassium is +1.

When an atom loses an electron to become a cation, the positive charge of its protons becomes more influential than the negative charge of its electrons. In the case of potassium, it donates one electron to become a potassium ion (K+). This results in a slightly positive charge.