The correct name for the type 1 binary compound KCl is potassium chloride.

Here's why:

* Type 1 binary compounds consist of a metal and a nonmetal.

* Potassium (K) is a metal, and chlorine (Cl) is a nonmetal.

* The name of the metal (potassium) is written first, followed by the nonmetal (chlorine).

* The nonmetal's name is changed to end in "-ide".

Therefore, the name of KCl is potassium chloride.