Here's how to figure out the number of protons and electrons in Li⁻¹ (Lithium with a -1 charge):

* Protons: The number of protons in an atom defines its element. Lithium (Li) has 3 protons. This number *never* changes.

* Electrons: A neutral lithium atom has 3 electrons to balance the 3 protons. Since Li⁻¹ has a -1 charge, it means it has gained one extra electron. This brings the total number of electrons to 4.

Summary:

* Protons: 3

* Electrons: 4