Question

identify the element based on the information below: located in period 4, smallest mass in the period

Explanation:

Step1: Recall periodic table basics

Elements in the periodic table are arranged in periods (rows) and groups (columns). Atomic mass generally increases across a period from left - to - right.

Step2: Identify element in Period 4

In Period 4, the element with the smallest atomic mass is Potassium (K). It is the first element in Period 4.

Answer:

Potassium (K)