An element X belongs to 3rd period and group II of the periodic table . State :
Name of the elements.

Explanation

To solve the question, we need to identify the element X that belongs to the 3rd period and group II of the periodic table. Here’s a step-by-step solution:

### Step 1: Understand the Periodic Table
The periodic table is organized into periods (horizontal rows) and groups (vertical columns). Elements in the same group have similar properties.

### Step 2: Identify Group II Elements
Group II of the periodic table is also known as the alkaline earth metals. The elements in this group are:
- Beryllium (Be)
...