Question

1. elements with a complete outer shell are located ___________. a. elements with a one - electron in their outer shell are in group _________ (number at the top of the column on a periodic table). b. group 1 elements are called the ___________.

Explanation:

a. In the periodic table, elements with one electron in their outer shell are in Group 1.
b. Group 1 elements are called alkali metals due to their reactivity and formation of alkaline - solutions when reacting with water.

Answer:

a. 1
b. alkali metals