Identify elements X and Y, their properties, and recommend which is better for sodium-based processes.

Here is the technical report for the chemical factory safety team:

Technical Report: Assessment of Unknown Elemental Samples X and Y for Sodium-Based Processes

To: Production Manager, Safety Team
From: Chemistry Student Advisor
Date: [Current Date]
Subject: Identification, Reactivity, and Safe Handling of Elemental Samples X and Y

1. Introduction
This report provides a technical evaluation of two unknown elemental samples, X and Y, to inform safe handling and use in the factory's sodium-based processes. It identifies the elements, their positions in the periodic table, explains the reactivity of element Y with sodium, and recommends appropriate handling procedures and the most suitable element for the factory's operations.

2. Identification and Electronic Configurations

• Element X:
  • Information: "its last electron entering the 4s orbital"
  • Electronic Configuration: $$ 1s^2 2s^2 2p^